Patents by Inventor Peter Leicht
Peter Leicht 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: 10844481Abstract: In one aspect, articles are described comprising wear resistant coatings employing one or more composite refractory layers. For example, a coated article described herein comprises a substrate and a coating deposited by CVD adhered to the substrate, the coating including a multiphase refractory layer comprising an alumina phase and a zirconia phase, wherein the zirconia phase has a texture coefficient for the (200) growth direction, TC(200), greater than 4.Type: GrantFiled: April 17, 2019Date of Patent: November 24, 2020Assignee: KENNAMETAL INC.Inventors: Rodrigo Alejandro Cooper, Karl Heinz Wendt, Peter Leicht, Bhaskar Alok, Yixiong Liu
-
Publication number: 20190242013Abstract: In one aspect, articles are described comprising wear resistant coatings employing one or more composite refractory layers. For example, a coated article described herein comprises a substrate and a coating deposited by CVD adhered to the substrate, the coating including a multiphase refractory layer comprising an alumina phase and a zirconia phase, wherein the zirconia phase has a texture coefficient for the (200) growth direction, TC(200), greater than 4.Type: ApplicationFiled: April 17, 2019Publication date: August 8, 2019Inventors: Rodrigo Alejandro Cooper, Karl Heinz Wendt, Peter Leicht, Bhaskar Alok, Yixiong Liu
-
Patent number: 10273575Abstract: In one aspect, articles are described comprising wear resistant coatings employing one or more composite refractory layers. For example, a coated article described herein comprises a substrate and a coating deposited by CVD adhered to the substrate, the coating including a multiphase refractory layer comprising an alumina phase and a zirconia phase, wherein the zirconia phase has a texture coefficient for the (200) growth direction, TC(200), greater than 4.Type: GrantFiled: August 31, 2016Date of Patent: April 30, 2019Assignee: KENNAMETAL INC.Inventors: Rodrigo Alejandro Cooper, Karl Heinz Wendt, Peter Leicht, Bhaskar Alok, Yixiong Liu
-
Publication number: 20180057934Abstract: In one aspect, articles are described comprising wear resistant coatings employing one or more composite refractory layers. For example, a coated article described herein comprises a substrate and a coating deposited by CVD adhered to the substrate, the coating including a multiphase refractory layer comprising an alumina phase and a zirconia phase, wherein the zirconia phase has a texture coefficient for the (200) growth direction, TC(200), greater than 4.Type: ApplicationFiled: August 31, 2016Publication date: March 1, 2018Inventors: Rodrigo Alejandro Cooper, Karl Heinz Wendt, Peter Leicht, Bhaskar Alok, Yixiong Liu
-
Patent number: 9427808Abstract: In one aspect, cutting tools are described having coatings adhered thereto which, in some embodiments, demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating including a refractory layer comprising plurality of sublayer groups, a sublayer group comprising an aluminum oxynitride (AlON) sublayer or a composite AlON sublayer and an alumina (Al2O3) sublayer or composite alumina sublayer.Type: GrantFiled: August 30, 2013Date of Patent: August 30, 2016Assignee: KENNAMETAL INC.Inventors: Volkmar Sottke, Karl Heinz Wendt, Hartmut Westphal, Peter Leicht, Yixiong Liu
-
Patent number: 9168664Abstract: In one aspect, coated cutting tools are described herein. In some embodiments, a coated cutting tool comprises a substrate and a refractory layer deposited by PVD adhered to the substrate, the refractory layer comprising M1?xAlxN wherein x?0.4 and M is titanium, chromium or zirconium, the refractory layer having a thickness greater than 5 ?m, hardness of at least 25 GPa and residual compressive stress less than 2.5 GPa.Type: GrantFiled: August 16, 2013Date of Patent: October 27, 2015Assignee: KENNAMETAL INC.Inventors: Vineet Kumar, Ronald Penich, Peter Leicht, Yixiong Liu
-
Patent number: 9138864Abstract: In one aspect, coated cutting tools are described herein. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition, the composite layer comprising an aluminum oxynitride phase, a metal oxide phase including zirconium oxide, a zirconium sulfur nitride phase and a metal oxynitride phase in addition to the aluminum oxynitride phase, the metal oxynitride phase comprising zirconium oxynitride.Type: GrantFiled: January 24, 2014Date of Patent: September 22, 2015Assignee: KENNAMETAL INC.Inventors: Karl Heinz Wendt, Volkmar Sottke, Rodrigo Alejandro Cooper, Peter Leicht, Yixiong Liu
-
Patent number: 9017809Abstract: In one aspect, cutting tools are described having coatings adhered thereto. A coated cutting tool, in some embodiments, comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition comprising an aluminum oxynitride phase and a metal oxide phase, the metal oxide phase including at least one oxide of a metallic element selected from Group IVB of the Periodic Table.Type: GrantFiled: January 25, 2013Date of Patent: April 28, 2015Assignee: Kennametal Inc.Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg, Peter Leicht, Mark Greenfield, Yixiong Liu
-
Publication number: 20150064431Abstract: In one aspect, cutting tools are described having coatings adhered thereto which, in some embodiments, demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating including a refractory layer comprising plurality of sublayer groups, a sublayer group comprising an aluminum oxynitride (AlON) sublayer or a composite AlON sublayer and an alumina (Al2O3) sublayer or composite alumina sublayer.Type: ApplicationFiled: August 30, 2013Publication date: March 5, 2015Applicant: Kennametal Inc.Inventors: Volkmar Sottke, Karl Heinz Wendt, Hartmut Westphal, Peter Leicht, Yixiong Liu
-
Publication number: 20150050489Abstract: In one aspect, coated cutting tools are described herein. In some embodiments, a coated cutting tool comprises a substrate and a refractory layer deposited by PVD adhered to the substrate, the refractory layer comprising M1-xAlxN wherein x?0.4 and M is titanium, chromium or zirconium, the refractory layer having a thickness greater than 5 ?m, hardness of at least 25 GPa and residual compressive stress less than 2.5 GPa.Type: ApplicationFiled: August 16, 2013Publication date: February 19, 2015Applicant: Kennametal Inc.Inventors: Vineet Kumar, Ronald Penich, Peter Leicht, Yixiong Liu
-
Publication number: 20140208659Abstract: In one aspect, cutting tools are described having coatings adhered thereto. A coated cutting tool, in some embodiments, comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition comprising an aluminum oxynitride phase and a metal oxide phase, the metal oxide phase including at least one oxide of a metallic element selected from Group IVB of the Periodic Table.Type: ApplicationFiled: January 25, 2013Publication date: July 31, 2014Applicant: Kennametal Inc.Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg, Peter Leicht, Mark Greenfield, Yixiong Liu
-
Publication number: 20140208662Abstract: In one aspect, coated cutting tools are described herein. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition, the composite layer comprising an aluminum oxynitride phase, a metal oxide phase including zirconium oxide, a zirconium sulfur nitride phase and a metal oxynitride phase in addition to the aluminum oxynitride phase, the metal oxynitride phase comprising zirconium oxynitride.Type: ApplicationFiled: January 24, 2014Publication date: July 31, 2014Applicant: Kennametal, Inc.Inventors: Karl Heinz Wendt, Volkmar Sottke, Rodrigo Alejandro Cooper, Peter Leicht, Yixiong Liu
-
Patent number: 8668982Abstract: A coated cutting insert for removing material from a workpiece that includes a substrate is disclosed. A wear-resistant coating on the substrate that includes an alumina layer and a Zr- or Hf-carbonitride outer layer deposited on the alumina layer. The Zr- or Hf-carbonitride outer layer is subjected to a post-coat wet blasting treatment. The wet blasting changes the stress condition of the exposed alumina coating layer from an initial tensile stress condition to a compressive stress condition.Type: GrantFiled: November 18, 2011Date of Patent: March 11, 2014Assignee: Kennametal Inc.Inventors: Peter Leicht, Mark Greenfield, Volkmar Sottke, Zhigang Ban, Hartmut Westphal, Yixiong Liu, Michael Frank Beblo
-
Publication number: 20120128955Abstract: A coated cutting insert for removing material from a workpiece that includes a substrate is disclosed. A wear-resistant coating on the substrate that includes an alumina layer and a Zr- or Hf-carbonitride outer layer deposited on the alumina layer. The Zr- or Hf-carbonitride outer layer is subjected to a post-coat wet blasting treatment. The wet blasting changes the stress condition of the exposed alumina coating layer from an initial tensile stress condition to a compressive stress condition.Type: ApplicationFiled: November 18, 2011Publication date: May 24, 2012Applicant: Kennametal Inc.Inventors: Peter Leicht, Mark Greenfield, Volkmar Sottke, Zhigang Ban, Hartmut Westphal, Yixiong Liu, Michael Frank Beblo
-
Publication number: 20060177584Abstract: A coated body that includes a substrate and a coating scheme on the substrate. The coating scheme on the substrate wherein the coating scheme includes an alpha-alumina coating layer that exhibits a platelet grain morphology at the surface of the alpha-alumina coating layer or a kappa-alumina coating layer that exhibits either a lenticular grain morphology or a polyhedra-lenticular grain morphology at the surface thereof or an alpha-kappa-alumina coating layer that exhibits either a large multifaceted grain morphology or a polyhedra-multifaceted grain morphology at the surface thereof.Type: ApplicationFiled: March 31, 2006Publication date: August 10, 2006Applicant: Kennametal Inc.Inventors: Alfred Gates, Pankaj Mehrotra, Charles McNerny, Peter Leicht
-
Publication number: 20050202283Abstract: A coated body that includes a substrate and a coating scheme on the substrate. The coating scheme on the substrate wherein the coating scheme includes an alpha-alumina coating layer that exhibits a platelet grain morphology at the surface of the alpha-alumina coating layer or a kappa-alumina coating layer that exhibits either a lenticular grain morphology or a polyhedra-lenticular grain morphology at the surface thereof or an alpha-kappa-alumina coating layer that exhibits either a large multifaceted grain morphology or a polyhedra-multifaceted grain morphology at the surface thereof.Type: ApplicationFiled: March 12, 2004Publication date: September 15, 2005Inventors: Alfred Gates, Pankaj Mehrotra, Charles McNerny, Peter Leicht