Patents by Inventor Krishnamoorthy Subramanian
Krishnamoorthy Subramanian has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11453811Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: GrantFiled: August 23, 2019Date of Patent: September 27, 2022Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Paul Braun, Doruk O. Yener, Jennifer H. Czerepinski, Ralph Bauer, Krishnamoorthy Subramanian, Robin M. Bright, Anuj Seth, Gregory G. Lafond
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Publication number: 20190382637Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: ApplicationFiled: August 23, 2019Publication date: December 19, 2019Inventors: Paul BRAUN, Doruk O. YENER, Jennifer H. CZEREPINSKI, Ralph BAUER, Krishnamoorthy SUBRAMANIAN, Robin M. BRIGHT, Anuj SETH, Gregory G. LAFOND
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Patent number: 10428255Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: GrantFiled: September 28, 2016Date of Patent: October 1, 2019Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Paul Braun, Doruk O. Yener, Jennifer H. Czerepinski, Ralph Bauer, Krishnamoorthy Subramanian, Robin M. Bright, Anuj Seth, Gregory G. Lafond
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Patent number: 9765249Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: GrantFiled: July 18, 2014Date of Patent: September 19, 2017Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Paul Braun, Doruk O. Yener, Jennifer H. Czerepinski, Ralph Bauer, Krishnamoorthy Subramanian, Robin M. Bright, Anuj Seth, Gregory G. Lafond
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Publication number: 20170015886Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: ApplicationFiled: September 28, 2016Publication date: January 19, 2017Inventors: Paul Braun, Doruk O. Yener, Jennifer H. Czerepinski, Ralph Bauer, Krishnamoorthy Subramanian, Robin M. Bright, Anuj Seth, Gregory G. Lafond
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Patent number: 9248583Abstract: An abrasive article may include a substrate, a tacking film overlying the substrate, abrasive particles that may include a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film.Type: GrantFiled: December 30, 2011Date of Patent: February 2, 2016Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Yinggang Tian, Arup K. Khaund, Krishnamoorthy Subramanian, John Pearlman
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Patent number: 9186816Abstract: An abrasive article may include a substrate, a tacking film overlying the substrate, abrasive particles that may include a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film.Type: GrantFiled: March 7, 2012Date of Patent: November 17, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Yinggang Tian, Arup K. Khaund, Krishnamoorthy Subramanian, John Pearlman
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Patent number: 9044841Abstract: A method of forming an abrasive article includes directing a beam of electromagnetic radiation at a starting location on an abrasive preform comprising a bonding layer and abrasive grains within the bonding layer, and increasing the power of the beam of electromagnetic radiation to a scanning power while directed at the starting location. The method further includes changing the position of the beam relative to the abrasive preform from the starting location to a second location on the abrasive preform.Type: GrantFiled: November 19, 2009Date of Patent: June 2, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Yinggang Tian, Krishnamoorthy Subramanian
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Patent number: 9028948Abstract: An abrasive article includes an elongated body, a bonding layer including a metal overlying a surface of the elongated body, and a coating layer including a polymer material overlying the boding layer. The abrasive article further includes abrasive grains contained within the bonding layer and coating layer, and wherein the bonding layer comprises an average thickness (tbl) at least about 40% of the average grit size of the abrasive grains.Type: GrantFiled: August 16, 2010Date of Patent: May 12, 2015Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Yinggang Tian, Ran Ding, Susanne Liebelt, Krishnamoorthy Subramanian
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Publication number: 20150079883Abstract: An abrasive tool includes a bonded abrasive body having abrasive grains contained within a bonding material, wherein the bonded abrasive body comprises a complex shape having a form depth (FD) of at least about 0.3. The form depth is described by the equation [(R1?Rs)/R1], wherein Rs is a smallest radius (Rs) at a point along the longitudinal axis of the bonded abrasive body and R1 is a largest radius (R1) at a point along the longitudinal axis of the bonded abrasive body. The abrasive tool can be used to finish complex shapes in workpieces.Type: ApplicationFiled: November 17, 2014Publication date: March 19, 2015Inventors: John R. Besse, David C. Graham, Krishnamoorthy Subramanian, Srinivasan Ramanath, Marc A. Lamoureux
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Patent number: 8911283Abstract: An abrasive tool includes a bonded abrasive body having abrasive grains contained within a bonding material, wherein the bonded abrasive body comprises a complex shape having a form depth (FD) of at least about 0.3. The form depth is described by the equation [(Rl?Rs)/Rl], wherein Rs is a smallest radius (Rs) at a point along the longitudinal axis of the bonded abrasive body and Rl is a largest radius (Rl) at a point along the longitudinal axis of the bonded abrasive body. The abrasive tool can be used to finish complex shapes in workpieces.Type: GrantFiled: August 5, 2011Date of Patent: December 16, 2014Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: John R. Besse, David C. Graham, Krishnamoorthy Subramanian, Srinivasan Ramanath, Marc A. Lamoureux
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Publication number: 20140325917Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: ApplicationFiled: July 18, 2014Publication date: November 6, 2014Inventors: Paul Braun, Doruk O. Yener, Jennifer H. Czerepinski, Ralph Bauer, Krishnamoorthy Subramanian, Robin M. Bright, Anuj Seth, Gregory G. Lafond
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Patent number: 8840695Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: GrantFiled: December 31, 2012Date of Patent: September 23, 2014Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventors: Paul P. Braun, Doruk O. Yener, Jennifer H. Czerepinski, Ralph Bauer, Krishnamoorthy Subramanian, Robin Bright, Anuj Seth, Gregory G. Lafond
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Publication number: 20130199105Abstract: A method of forming a mixture including a ceramic material into a sheet, sectioning at least a portion of the sheet using a mechanical object and forming at least one shaped abrasive particle from the sheet, such that the at least one shaped abrasive particle can have a two-dimensional shape as viewed in a plane defined by a length and a width of the shaped abrasive particle selected from the group consisting of polygons, ellipsoids, numerals, Greek alphabet characters, Latin alphabet characters, Russian alphabet characters, complex shapes having a combination of polygonal shapes, and a combination thereof.Type: ApplicationFiled: December 31, 2012Publication date: August 8, 2013Inventors: Paul P. Braun, Doruk O. Yener, Jennifer H. Czerepinski, Ralph Bauer, Krishnamoorthy Subramanian, Robin Bright, Anuj Seth, Gregory G. Lafond
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Publication number: 20130061535Abstract: An abrasive article having a substrate, a tacking film overlying the substrate, abrasive particles comprising a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film,Type: ApplicationFiled: March 7, 2012Publication date: March 14, 2013Applicants: SAINT-GOBAIN ABRASIFS, SAINT-GOBAIN ABRASIVES, INC.Inventors: Yinggang Tian, Arup K. Khaund, Krishnamoorthy Subramanian, John Pearlman
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Publication number: 20120167482Abstract: An abrasive article having a substrate, a tacking film overlying the substrate, abrasive particles comprising a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film,Type: ApplicationFiled: December 30, 2011Publication date: July 5, 2012Applicants: SAINT-GOBAIN ABRASIFS, SAINT-GOBAIN ABRASIVES, INC.Inventors: Yinggang Tian, Arup K. Khaund, Krishnamoorthy Subramanian, John Pearlman
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Publication number: 20120055097Abstract: A method of forming an abrasive article includes directing a beam of electromagnetic radiation at a starting location on an abrasive preform comprising a bonding layer and abrasive grains within the bonding layer, and increasing the power of the beam of electromagnetic radiation to a scanning power while directed at the starting location. The method further includes changing the position of the beam relative to the abrasive preform from the starting location to a second location on the abrasive preform.Type: ApplicationFiled: November 19, 2009Publication date: March 8, 2012Applicants: SAINT-GOBAIN ABRASIVES, INC.Inventors: Yinggang Tian, Krishnamoorthy Subramanian
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Publication number: 20120034847Abstract: An abrasive tool includes a bonded abrasive body having abrasive grains contained within a bonding material, wherein the bonded abrasive body comprises a complex shape having a form depth (FD) of at least about 0.3. The form depth is described by the equation [(Rl?Rs)/Rl], wherein Rs is a smallest radius (Rs) at a point along the longitudinal axis of the bonded abrasive body and Rl is a largest radius (Rl) at a point along the longitudinal axis of the bonded abrasive body. The abrasive tool can be used to finish complex shapes in workpieces.Type: ApplicationFiled: August 5, 2011Publication date: February 9, 2012Applicants: SAINT-GOBAIN ABRASIFS, SAINT-GOBAIN ABRASIVES, INC.Inventors: John R. Besse, David C. Graham, Krishnamoorthy Subramanian, Srinivasan Ramanath, Marc A. Lamoureux
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Publication number: 20110045292Abstract: An abrasive article includes an elongated body, a bonding layer including a metal overlying a surface of the elongated body, and a coating layer including a polymer material overlying the boding layer. The abrasive article further includes abrasive grains contained within the bonding layer and coating layer, and wherein the bonding layer comprises an average thickness (tbl) at least about 40% of the average grit size of the abrasive grains.Type: ApplicationFiled: August 16, 2010Publication date: February 24, 2011Applicants: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFSInventors: Yinggang Tian, Ran Ding, Susanne Liebelt, Krishnamoorthy Subramanian
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Patent number: 7708619Abstract: A method of producing a complex shape in a workpiece includes the steps of: i) grinding a workpiece at a maximum specific cutting energy of about 10 Hp/in3·min with at least one bonded abrasive tool, thereby forming a slot in the workpiece; and ii) grinding the slot with at least one mounted point tool, thereby producing the complex shape in the slot. The bonded abrasive tool includes at least about 3 volume % of a filamentary sol-gel alpha-alumina abrasive grain having an average length-to-cross-sectional-width ratio of greater than about 4:1 or an agglomerate thereof. A method of producing a slot in a metallic workpiece having a maximum hardness value of equal to, or less than, about 65 Rc includes the step of grinding the workpiece with a bonded abrasive tool at a material removal rate in a range of between about 0.25 in3/min·in and about 60 in3/min·in and at a maximum specific cutting energy of about 10 Hp/in3·min.Type: GrantFiled: May 23, 2006Date of Patent: May 4, 2010Assignees: Saint-Gobain Abrasives, Inc., Saint-Gobain AbrasifsInventors: Krishnamoorthy Subramanian, John A. Webster, Peter Caputa, IV