Patents by Inventor Pankaj B. Trivedi
Pankaj B. Trivedi 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).
-
Patent number: 11958115Abstract: In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.Type: GrantFiled: February 25, 2021Date of Patent: April 16, 2024Assignee: KENNAMETAL INC.Inventors: Pankaj K. Mehrotra, Pankaj B. Trivedi, Kent P. Mizgalski
-
Publication number: 20210178476Abstract: In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.Type: ApplicationFiled: February 25, 2021Publication date: June 17, 2021Inventors: Pankaj K. Mehrotra, Pankaj B. Trivedi, Kent P. Mizgalski
-
Patent number: 10940538Abstract: In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.Type: GrantFiled: August 11, 2017Date of Patent: March 9, 2021Assignee: KENNAMETAL INC.Inventors: Pankaj K. Mehrotra, Pankaj B. Trivedi, Kent P. Mizgalski
-
Patent number: 10415119Abstract: In one aspect sintered cemented carbide articles are described herein which, in some embodiments, exhibit enhanced resistance to wear and thermal fatigue. Further, sintered cemented carbide articles described herein can tolerate variations in carbon content without formation of undesirable phases, including eta phase and/or free graphite (C-type porosity). Such tolerance can facilitate manufacturing and use of carbide grades where carbon content is not strictly controlled. A sintered cemented carbide body described herein comprises a hard particle phase including tungsten carbide and a metallic binder phase comprising at least one of cobalt, nickel and iron and one or more alloying additives, wherein the sintered cemented carbide has a magnetic saturation (MS) ranging from 0% to 73% and no eta phase.Type: GrantFiled: July 10, 2017Date of Patent: September 17, 2019Assignee: KENNAMETAL INC.Inventors: Pankaj B. Trivedi, Pankaj Kumar Mehrotra
-
Publication number: 20190047051Abstract: In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.Type: ApplicationFiled: August 11, 2017Publication date: February 14, 2019Inventors: Pankaj K. MEHROTRA, Pankaj B. TRIVEDI, Kent P. MIZGALSKI
-
Publication number: 20170306456Abstract: In one aspect sintered cemented carbide articles are described herein which, in some embodiments, exhibit enhanced resistance to wear and thermal fatigue. Further, sintered cemented carbide articles described herein can tolerate variations in carbon content without formation of undesirable phases, including eta phase and/or free graphite (C-type porosity). Such tolerance can facilitate manufacturing and use of carbide grades where carbon content is not strictly controlled. A sintered cemented carbide body described herein comprises a hard particle phase including tungsten carbide and a metallic binder phase comprising at least one of cobalt, nickel and iron and one or more alloying additives, wherein the sintered cemented carbide has a magnetic saturation (MS) ranging from 0% to 73% and no eta phase.Type: ApplicationFiled: July 10, 2017Publication date: October 26, 2017Inventors: Pankaj B. TRIVEDI, Pankaj Kumar Mehrotra
-
Patent number: 9796633Abstract: An aqueous slurry that is useful upon being spray dried for the formation of a powder of hard material. The aqueous slurry includes starting powder components of the hard material. The slurry further includes an oxidation inhibitor, a surfactant in an amount between about 0.05 weight percent and about 0.30 weight percent of the weight of the starting powder components of the hard material, a binder, a defoamer and water in an between about 15 weight percent and about 30 weight percent of the weight of the weight of the starting powder components of the hard material. The aqueous slurry has a percent solids value that is between about 70 percent and about 85 percent.Type: GrantFiled: September 16, 2016Date of Patent: October 24, 2017Assignee: KENNAMETAL INC.Inventors: Pankaj B. Trivedi, Pankaj K. Mehrotra, Neal S. Myers
-
Patent number: 9725794Abstract: In one aspect sintered cemented carbide articles are described herein which, in some embodiments, exhibit enhanced resistance to wear and thermal fatigue. Further, sintered cemented carbide articles described herein can tolerate variations in carbon content without formation of undesirable phases, including eta phase and/or free graphite (C-type porosity). Such tolerance can facilitate manufacturing and use of carbide grades where carbon content is not strictly controlled. A sintered cemented carbide body described herein comprises a hard particle phase including tungsten carbide and a metallic binder phase comprising at least one of cobalt, nickel and iron and one or more alloying additives, wherein the sintered cemented carbide has a magnetic saturation (MS) ranging from 0% to 73% and no eta phase.Type: GrantFiled: December 17, 2014Date of Patent: August 8, 2017Assignee: KENNAMETAL INC.Inventors: Pankaj B. Trivedi, Pankaj Kumar Mehrotra
-
Publication number: 20170001916Abstract: An aqueous slurry that is useful upon being spray dried for the formation of a powder of hard material. The aqueous slurry includes starting powder components of the hard material. The slurry further includes an oxidation inhibitor, a surfactant in an amount between about 0.05 weight percent and about 0.30 weight percent of the weight of the starting powder components of the hard material, a binder, a defoamer and water in an between about 15 weight percent and about 30 weight percent of the weight of the weight of the starting powder components of the hard material. The aqueous slurry has a percent solids value that is between about 70 percent and about 85 percent.Type: ApplicationFiled: September 16, 2016Publication date: January 5, 2017Inventors: Pankaj B. TRIVEDI, Pankaj K. Mehrotra, Neal S. Myers
-
Patent number: 9475945Abstract: An aqueous slurry that is useful upon being spray dried for the formation of a powder of hard material. The aqueous slurry includes starting powder components of the hard material. The slurry further includes an oxidation inhibitor, a surfactant in an amount between about 0.05 weight percent and about 0.30 weight percent of the weight of the starting powder components of the hard material, a binder, a defoamer and water in an between about 15 weight percent and about 30 weight percent of the weight of the weight of the starting powder components of the hard material. The aqueous slurry has a percent solids value that is between about 70 percent and about 85 percent.Type: GrantFiled: October 3, 2013Date of Patent: October 25, 2016Assignee: KENNAMETAL INC.Inventors: Pankaj B. Trivedi, Pankaj K. Mehrotra, Neal S. Myers
-
Publication number: 20160177426Abstract: In one aspect sintered cemented carbide articles are described herein which, in some embodiments, exhibit enhanced resistance to wear and thermal fatigue. Further, sintered cemented carbide articles described herein can tolerate variations in carbon content without formation of undesirable phases, including eta phase and/or free graphite (C-type porosity). Such tolerance can facilitate manufacturing and use of carbide grades where carbon content is not strictly controlled. A sintered cemented carbide body described herein comprises a hard particle phase including tungsten carbide and a metallic binder phase comprising at least one of cobalt, nickel and iron and one or more alloying additives, wherein the sintered cemented carbide has a magnetic saturation (MS) ranging from 0% to 73% and no eta phase.Type: ApplicationFiled: December 17, 2014Publication date: June 23, 2016Inventors: Pankaj B. TRIVEDI, Pankaj Kumar Mehrotra
-
Publication number: 20150096467Abstract: An aqueous slurry that is useful upon being spray dried for the formation of a powder of hard material. The aqueous slurry includes starting powder components of the hard material. The slurry further includes an oxidation inhibitor, a surfactant in an amount between about 0.05 weight percent and about 0.30 weight percent of the weight of the starting powder components of the hard material, a binder, a defoamer and water in an between about 15 weight percent and about 30 weight percent of the weight of the weight of the starting powder components of the hard material. The aqueous slurry has a percent solids value that is between about 70 percent and about 85 percent.Type: ApplicationFiled: October 3, 2013Publication date: April 9, 2015Applicant: Kennametal Inc.Inventors: Pankaj B. Trivedi, Pankaj K. Mehrotra, Neal S. Myers