Welding Research Institute

Patents & Copyrigths

List of patents submitted by WRI & Labs for the year 2011-12

SL. NO.	TITLE	INVENTOR	IPR TYPE
1	A method to optically determine the heat exchanger metal temperature	Dr. S.Dharmalingam Mr. K.Karthikayan	Patent
2	A method to optically determine the stress in pressure parts and heat exchanger(s)	Dr. S.Dharmalingam Mr. K.Karthikayan	Patent
3	A novel flux composition to obtain enhanced penetration during TIG welding of mild steel	Mr. C.P.Ravichandran Mr. N.Rajasekaran	Patent
4	A reference block for phased array ultrasonic testing of MAIB welded tube butt joint	Mr. N.Dhansekaran Mr. S.Manimozhi Dr. S.Suresh	Patent
5	Evaluation of non linear component of residual stress during hole drilling method as per ASTM standard	Dr. G.Ravichandran	Copyright
6	Fatigue life assessment of welded components as per ASME code	Dr. G.Ravichandran	Copyright
7	A method and procedure for welding tension bars to transition panel to control distortion	Dr. N.Raju Mr. V.SUdharsanam Mr. Srivastav Mr. Surya Rao Ravipati	Patent
8	A modified jet entry and exit profile path and a method for eliminating blow-out blemish during hole machining in non-ferrous materials using abrasive water jet cutting technique	Mr. V.Sudharasanam Mr. Vikas Srivastav Dr. N.Raju	Patent
9	Method for identification of various ferrous materials, electrodes used for ferrous material welding and residual mechanical properties of serviced ferrous materials through measurement of coercive force	Mr. R.Vetriselvan Mr. V.Sudharsanam Dr. N.Raju Dr. S.Suresh	Patent
10	A new automotive method for bifurcate tubes welding	Mr. N.Rajasekaran Mr. Lucky Gaur Dr. A.Raja	Patent
11	A novel method to enhance shielded metal arc welding productivity during attachment welding of thick walled pressure vessel and a formulation for coated electrode for same	Mr. C.P.Ravichandran Dr. A.Raja	Patent
12	Methodology for metallurgical evaluation of eroded coating samples	Dr. R.Nagalakshmi Dr. S.Suresh	Patent
13	Improved pulsed GMAW techniques for hand hole pipe welding	Dr. K.Devakumaran Mr. Shanmugasundaram Mr. N.Rajasekaran Dr. A.Raja	Patent
14	A closed loop controller apparatus for MIAB welding machine	Dr. P.R.Venkateswaran Mr. K.Ganesh Kumar Dr. G.Buvanashekaran	Patent
15	ATIG welding of high wall thickness boiler tubes of grade SA 106 Gr.C using deep penetration flux	Mr. Dhanesh K Verma Dr. A.Raja Mrs. A.Santhakumari Mr. N.Rajasekaran Mr. Lucky Gaur	Patent
16	Robotic GMAW of HRSG module header to finned tubes in vertical position	Mrs. A.Santhakumari Mr. Dhanesh K Verma Mr. N.Rajasekaran Dr. A.Raja Dr. S.Suresh	Patent
17	Laser cladding of hand facing rings for internal cladding applications	Mr. B.Shanmugarajan Mr. K.Ganeshkumar Dr. G.Buvanashekaran	Patent
18	A novel coating composition and method to resist sea water corrosive wear in boiler furnace hopper bottom S panel	Mr. C.P.Ravichandran Dr. A.Raja Mr. T.S.Sekar	Patent
19	A process of gas metal arc welding with cold wire addition and an apparatus for the same	Mr. M.Ramakrishnan	Patent
20	A device for defect sizing by ultrasonic testing of spot weld	Mr. S.Gunasekar Mr. N.Dhanasekaran Dr. S.Suresh	Patent
21	Advanced method of root welding for pressure part application in power plant	Mr. Dileep Kumar Gupta Dr. A.Raja Mr. N.Rajasekaran	Patent
22	A method for reducing the agglomeration, sintering, shrinkage and choking formation resulting from combustion of solid fuels in fuel firing systems	Mr. A.Lawrence Mr. S.Sundararajan Mr. M.Muthukrishnan Mr. S.V.Srinivasan Mr. B.Ravikumar Mr. V.Illayaperumal Mr. C.Chandrabose Mr. R.Ravi	Patent
23	A method of cleaning and passivation of ferrous metal surfaces of supercritical boilers	Mr. R.Sivasubramanian Dr. A.Lawrence Mr. V.Illayaperumal Mr. C.Chandrabose Mr. R.Ravi Dr. K.P.Dhandapani	Patent

List of patents submitted by WRI & Labs for the year 2010-11

SL. NO.	TITLE	INVENTOR	IPR TYPE
1	Narrow gap submerged arc welding for boiler drum long seam welding using cold wire addition technique	Mr. M.Ramakrishnan Dr. K.Padmanabhan	Patent
2	A novel flux composition to obtain deep penetration during flux assisted TIG welding of stainless steel	Mr. C.P.Ravichandran	Patent
3	A method for metallurgical evaluation of indentation creep samples	Dr. R.Nagalakshmi Mr. S.Manimozhi	Patent
4	A methodology for application of known stress during stress corrosion evaluation	Dr. R.Nagalakshmi Dr. N.Raju Mr. A.Rathinam	Patent
5	A testing facility for conducting formability (Erichsen) test on seam welded sheets	Mr. A.Rathinam Dr. G.Ravichandran Dr. S.Suresh	Patent
6	Analysis of stress date using various failure theories	Dr. G.Ravichandran	Copyright
7	Design of non-tubular welded connections as per AWS D 1.1 code	Dr. G.Ravichandran	Copyright
8	A process of forward and backward feeding of cold wire addition technique in submerged arc welding and an apparatus for the same	Mr. M.Ramakrishnan Dr. S.Manoharan	Patent
9	A device and process there-of for measurement of angular dynamic distortion with strain gauge as sensor during welding	Dr. N.Raju Dr. S.Suresh Mr. V.Sudaharsanam	Patent
10	A process for friction welding of carbon steel valve body to yoke butt joint	Mr. M.Ramakrishnan Dr. S.Manoharan	Patent
11	A device and process for machining the weld notch of pellini drop weight test specimen using abrasive jet machining technique	Mr. V.Sudharsanam Mr. R.Vetriselvan Dr. N.Raju	Patent
12	A device to assess the capability of NDT test method	Mr. N.Dhanasekaran Dr. S.Suresh	Patent
13	Method of generating of Thermo-EMF in resistance hot staking process	Dr. S.Manoharan Mr. V.R. Samuel Dr. K.Asokkumar	Patent
14	Drum suspension rod fabrication using narrow gap submerged arc welding	Mr. M.Ramakrishnan Dr. S.Manoharan	Patent
15	A novel method for the hold plugging in friction stir welding	Dr. K.Asokkumar Dr. S.Manoharan Mr. Lucky Gaur Mr. Dileep K. Gupta	Patent
16	A novel automatic welding system for welding of irregular shaped bifurcate components of power boiler	Dr. A.Raja Mr. N.Rajasekaran Dr. S.Asokkumar Mr. Dileep K Gupta Mr. Lucky Gaur	Patent
17	Development of integrated consultant management system	Mrs. A.Santhakumari Mr. N.Rajasekaran Mr. R.Srinivasan	Copy Right
18	Mew welding method to high temperature and high pressure pipe application	Dr. A.Raja Mr. N.Rajasekaran Mr. P.V.Durga Ramesh Mrs. A.Santhakumari Mr.Shanmugasundaram	Patent
19	A method to optically determine the stress developed in pressure parts and heat exchangers	Dr. S.Dharmalingam Mr. ?K.Karthikayan	Patent
20	A method to optically determine the heat exchanger metal temperature	Dr. S.Dharmalingam Mr. K.Karthikayan	Patent

List of patents submitted by WRI & Labs for the year 2015-16

SL. NO.	TITLE	INVENTOR	IPR TYPE
1	A mounting device and process for mounting a travelling microscope on a fatigue testing machine to accurately measure crack length of welded samples	M Madhu V Sudharsanam	Patent
2	Autogenous laser butt welding fixture for welding reactive materials	B Shanmugarajan M Johnson Clawrence C Dhanasekaran	Patent
3	A novel fixture for holding, rotating and revolving the valve body	D K Verma A santhakumari Lucky Gaur Kannan S	Patent
4	A method of weld sequencing to control distortion in welding of burner panels of supercritical boilers	V Sudharsanam N Raju	Patent

List of patents submitted by WRI & Labs for the year 2016-17

SL. NO.	TITLE	INVENTOR	IPR TYPE
1	A Weld Sequencing Method And A Procedure Thereof For Weld Distortion Control In Triangular Shaped Tubular Panels	N Raju P Ramanathan V Sudharsanam Vijay Anandraj	Patent
2	A Method and Device for the Thermal Fatigue Testing of Thick Walled Large Size Cylindrical Components	R Vetriselvan G Archana	Patent
3	Evaluation of acceptance criteria for the radiographic testing of weld as per AWS standards	G Ravichandran	Copyright
4	Selection of stainless steel base metal and filler metal as per structural welding code for stainless steel	G Ravichandran	Copyright
5	Methodology of analysing welding fumes including particulate matter generates from different welding consumables and welding process	R Nagalakshmi	Patent
6	A Method for Controlling Weld Distortion ans Weld Cracking Problem in Repair Welding of Casings of Steam Turbines.	V Sudharsanam	Patent
7	A guide to understand how coding can be done using matlab in solving structural problems as in ANSYS	M Madhu	Copyright
8	Removal of Excessive weld metal reinforcement by high frequency gas tungsten arc welding process	K Devakumaran R Subbarayalu V Kalyanasundaram K Ganesh Kumar	Patent
9	Wrap around guided bend test module suitable with tensile test equipment	R Ravibharath Senthil Kumar S Mourougane P	Patent
10	Welding of leaded phosphor bronze casting having 5% Pb and 15% Sn using OFW process with copper filler wire	Vishal Singh G Vimalan	Patent
11	Introduction to phased array ultrasonic testing	S Gunasekaran	Copyright
12	Fitup arrangement to ensure centreline alignment of welding torch in autogenous applications	P R Venkateswaran S. Gunasekar L. Siva	Patent
13	A method for high speed keyhole plasma arc welding of thick plates	B Shanmugarajan Johnson Clawrence C Dhanasekaran	Patent
14	A novel method of orbital gas tugsten arc welding process using flux assisted filler wire to enhance penetration	D K Verma Lucky Gaur L Siva S Kannan	Patent
15	Development of fixture and technique for joining of disc to rod of dissimilar material	A Santhakumari Lucky Gaur M Palanisamy	Patent
16	A new approach for repair welding of copper used in pipe bending by high frequency gas tungsten arc welding process	K Ganesh Kumar K Devakumaran	Patent
17	A device to determine the axial resolution of angle beam ultrasonic transducer	R Arunan S Gunasekar	Patent
18	A methodology for realistic determination of lower critical transformation temperature in grade 91 weldments	G Vimalan	Patent

List of patents submitted by WRI & Labs for the year 2017-18

SL. NO.	TITLE	INVENTOR	IPR TYPE
1	A Method With Weld Sequencing Technique For Control Of Longitudinal And Side Bow Distortions Of Tubular Panels	V Sudharsanam Dr. N Raju N Durairaj Gireesh Babu N Srinivasan M Madhu/WRI	Patent
2	Manually Operable Four-Point Bend Fixture For Residual Stress Measurement Verification	M Madhu V SudharsanaRI G Archana/WRI K Selvakumar/WRI N Balasubramanian/WRI	Patent
3	Diffusion bonding of dissimilar joint between Titanium and stainless Steel	G Vimalan A K Dhanu Bharath A Santhakumari K Ganesh Kumar C Prakasam	Patent
4	Optimized procedure for dissimilar metal joining of alloy 617 with gr 91 steel for advanced fossil boiler applications	R Ravibharath S Senthilkumar P Mourougane	Patent
5	Calibration block to determine various resolving capability of time of flight diffraction (ToFD) probe	S Gunasekar K Ganesh Kumar	Patent
6	Arc Stability Evaluation using Fourier Transform	Dr.P.R.Venkateswaran C Rengarajan	Patent
7	A Device/Fixture Designed for Positioning of the Temple Bell for its Repair WeLding	Vishal Singh S Valliyappan N Srinivasan	Patent
8	Device to Measure Hogging Deflection in Thin Flat Samples	M Madhu V Sudharsanam V Karunakaran G Archana K Selvakumar N Balasubramanian	Patent
9	A method to Assess Health Condition of Radiant Coils of Pyrolysis Furnace	G Vimalan A K Dhanu Bharath A Santhakumari C Prakasam	Patent
10	Dual Bending machine for Performing Guided Bend Test & Wrap Around Bend Test of High Strength Materials	R Arunan M Johnson Clawrence	Patent
11	Simple fixture for wrap around bend testing of high strength materials	B Shanmugarajan M Johson Clawrence M Rajendiran A Muthu Kumar C Dhanasekaran	Patent
12	A novel method for training of manual welders	K Ganesh Kumar M Kayarohanam	Patent
13	Innovative forming method for triple elbows for panels in super critical boilers	A Santhakumari N Rajasekaran K Ravindran R Selvaraj K Ravindaran Vishal Singh	Patent
14	New procedure for butt welding of low thick plates without edge preparation for full penetration welds	A Santhakumari N Rajasekaran S Vallaiyappan	Patent
15	A novel electrode coating formulation for the shielded metal arc welding of martensitic steels* used in power plant showing excellent toughness	Vishal Singh A Santhakumari	Patent
16	A rutile electrode coating formulation for the SMAW of ferritic steels used in structural welding application showing higher toughness	Vishal Singh A Santhakumari	Patent
17	A novel electrode coating formulation for the shielded meal arc welding of ferritic steels used in power plant and structural welding application	Vishal Singh A Santhakumari	Patent

List of patents submitted by WRI & Labs for the year 2018-19

SL. NO.	TITLE	INVENTOR	IPR TYPE
1	A Method to Evaluate Quality of PWHT of Welds in Tubular Panels Made of Cr-Mo Steel in Once Through Supercritical Boiler	V Sudharsanam Dr. N Raju	Patent
2	Fixture for Fatigue Testing of Bush-To-Plate Weld Assembly	M Madhu V Sudharsanam	Patent
3	A Technique for Correction of Buckling in Thin Sheet Welding Applications Using Low Temperature Plastic	L Prakash Dr N Raju V Sudharsanam M Madhu V Karunakaran G Archana	Patent
4	Reference block to determine the dead zone and volume of coverage for TOFD inspection in pipes and headers	S Gunasekar	Patent
5	A Novel Method for Testing the Solidification Cracking Susceptibility in Austenitic Stainless Steel With Varying Shielding Gas.	R Ravibharath K Ganesh Kumar	Patent
6	Optimized procedure for dissimilar metal joining of 18Cr09Ni03CuVNb steel with 22Cr25NiWCoCu steel for advanced fossil boiler applications	R Ravibharath Mourugane S Senthilkumar	Patent
7	A Novel Method and Apparatus for Welding of Reactive Material Through Variable Gas Flow Purging	K Ganesh Kumar R Ravibharath	Patent
8	Heat Treatment method for optimising hardness and toughness properties of High Strength Low Alloy Steels	G Vimalan	Patent
9	Weld Methodology for Deep Bore Nickel Alloy Valve Body to Seat Ring Welding	P R Venkateswaran M Johnson Clawrence C Rengarajan	Patent
10	Methodology to Do Induction Heating Treatment for Nickel Alloy High Pressure Bypass Safety Valve Components	P R Venkateswaran V Sudharsanam M Madhu Dr N Raju	Patent
11	Purging Fixture to eliminate root oxidation for full penetration Inconel Pipe to tube joint	D K Verma A Santhakumari	Patent
12	Procedure for friction welding of Titanioum alpha alloy with SS using interlayer	A Santhakumari M Palanisamy	Patent
13	ATIG Welding of Aluminium for Increased Penetration Using Novel Flux	Vishal Singh A Santhakumari	Patent
14	Purging Apparatus for Welding Symmetrical Components Made of Heat Sensitive Materials	B Shanmugarajan M Johnson Clawrence M Rajendiran	Patent
15	Design of flux coating for E12018G stick electrode for welding of armour steel	Vishal Singh	Patent
16	Procedure for fabrication of a 'welded tree model- the kalpa wriksha'	V Sudharsanam G Archana K Selvakumar	Copyright
17	A novel technique of local PWHT using flexible resistance heating pads for IN617 pipe welds	V Sudharsanam Dr N Raju M Madhu Karunakaran	Patent
18	Procedure for establishment of site repair welding of Gr91 membrane wall panels	Dr N Raju Sudharsanam	Copyright
19	Welding Engineering	Dr N Raju P R Venkateswaran	Copyright
20	Phase Array Ultrasonic Level II Study Material	S Gunasekar	Copyright

List of patents submitted by WRI & Labs for the year 2019-20

SL. NO.	TITLE	INVENTOR	IPR TYPE
1	Procedure for Machining a Slender Hollow Reduced-Section Cylindrical Sample used in Thermomechanical Fatigue Tests	M Madhu	Patent
2	An improved method of local PWHT of weld joints made in boiler membrane water wall panels	V Sudharsanam M Madhu G Archana M Ramakrishnan	Patent
3	A method of short term stress relaxation testing of a low alloy steel	G Vimalan A Santhakumari	Patent
4	A tehnique for permanent reduction of elastically instable mode of welding induced buckling distortion in thin sheets by inducing palstic deformation using dilated application of thermo-mechanical force.	L Prakash P R Venkateswaran V Sudharsanam G Archana	Patent
5	Performance Metrics Calculation Methodology for Arc Stability in GMAW process	P R Venkateswaran A Santhakumari	Patent
6	A method for improving the hardness of a stellite clad deposit	B Shanmugarajan	Patent
7	Portable motorized lift mechanism to elevate weight through fork arm	M Madhu M Johnson Clawrence	Patent
8	Optimized procedure for dissimilar metal joining of alloy 617 (ASME code case:2439) with alloy 740H (ASME code case 2701-2) for advanced fossil boiler applications	R Ravibharath S Senthil Kumar P Mourougane	Patent

Welding Research Institute

Bharat Heavy Electricals Limited

Tiruchirappalli- 620014

Tamil Nadu, India

Contact us : + 91 431 2577207/8044

Email: wri@bhel.in/wriconsult@bhel.in

Patents & Copyrigths