Patents by Inventor Jerome Chevalier
Jerome Chevalier 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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Publication number: 20120196737Abstract: The invention relates to compositions based on Ce-stabilized ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations. The compositions exhibit high fracture toughness and high flexural strength.Type: ApplicationFiled: April 4, 2012Publication date: August 2, 2012Applicant: IVOCLAR VIVADENT AGInventors: Wolfram Höland, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jerome Chevalier, Dmitri Brodkin
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Publication number: 20120115707Abstract: A process for manufacturing a sintered ceramic composite, based on silicon nitride and ?-eucryptite, includes a step of producing a first powder blend, consisting of a powder of silicon nitride in crystalline form and a powder of a first lithium aluminosilicate in crystalline form, the composition of which is the following: (Li2O)x (Al2O3)y (SiO2)z, the lithium aluminosilicate composition being such that the set of molar fractions (x,y,z) is different from the set (1,1,2).Type: ApplicationFiled: April 28, 2011Publication date: May 10, 2012Applicant: THALESInventors: Laurent BLANCHARD, Gilbert FANTOZZI, Aurélien PELLETANT, Helen REVERON, Jérôme CHEVALIER, Yann VITUPIER
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Patent number: 8173562Abstract: The invention relates to compositions based on Ce-stabilized ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations. The compositions exhibit high fracture toughness and high flexural strength.Type: GrantFiled: June 13, 2008Date of Patent: May 8, 2012Assignee: Ivoclar Vivadent AGInventors: Wolfram Höland, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jerome Chevalier, Dmitri Brodkin
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Ceramic Composite Based on Beta-Eucryptite and an Oxide, and Process of Manufacturing Said Composite
Publication number: 20120107585Abstract: A composite having a coefficient of thermal expansion less than 1.3×10?6 K?1 is a sintered ceramic based on an oxide and on ?-eucryptite crystals having a ?-eucryptite content of less than 55% by weight (69% by volume).Type: ApplicationFiled: April 28, 2011Publication date: May 3, 2012Applicants: Centre National De La Recherche Scientifique (CNRS), THALESInventors: Laurent BLANCHARD, Gilbert FANTOZZI, Aurélien PELLETANT, Helen REVERON, Jérôme CHEVALIER -
Publication number: 20110254181Abstract: The invention relates to a composite ceramic material which comprises: (a) a first phase based on zirconia containing CeO2 as stabilizer, and (b) a second phase based on an aluminate. The invention also relates to a ceramic powder composition, processes for the preparation of the composite ceramic material and the ceramic powder composition as well as uses thereof.Type: ApplicationFiled: April 13, 2011Publication date: October 20, 2011Applicant: IVOCLAR VIVADENT AGInventors: Wolfram Holand, Elke Apel, Christian Ritzberger, Frank Rothbrust, Heinrich Kappert, Volker Rheinberger, Jerome Chevalier, Helen Reveron, Nicolas Courtois, Ricardo Dellagiacomo
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Patent number: 7709081Abstract: The invention relates to porous bioglass and to the preparation method thereof. More specifically, the invention relates to a solid, porous crystalline or partially-crystalline composition containing at least SiO2, Ca<SB>O</SB>, Na2O, and P2O5, comprising micropores and macropores. The invention is characterised in that: the pore ratio varies between 50% and 80%, preferably between 60 and 75%, and is measured using the geometric method; the average diameter of the macropores varies between 100 and 1250 micrometers, preferably between 150 and 300 micrometers; the average diameter of the micropores is less than or equal to 5 micrometers; and the compression strength varies between 7 MPa and 70 MPa. The invention also relates to the method of preparing one such composition and to such a composition treated with a physiological liquid having an ionic composition similar to that of human plasma. The invention also relates to an implant which is made from one such composition.Type: GrantFiled: July 25, 2005Date of Patent: May 4, 2010Assignee: Institut National des Sciences Appliques (INSA)Inventors: Rachid Zenati, Gilbert Fantozzi, Jerome Chevalier, Mourad Arioua
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Patent number: 7507017Abstract: The wristwatch with a reversible case (12) is provided with a wristband, each end strand of which includes an insert (30) which is pivotably and slidably mounted on the case (12) via a trunnion (32). Each insert (30) includes at least two indexed angular positions, which respectively correspond to two positions of use of the case (12), and at least one longitudinal rest position wherein the insert (30) is blocked from pivoting by a male element (36) fitting inside a female element (38), one of the elements (36) being arranged on the case (12), the other element (38) being arranged on the insert (30), and a longitudinal pivoting position wherein the insert (30) is shifted longitudinally outwards and wherein the insert (30) is free to pivot. The invention is characterized in that each trunnion (32) includes a first indexing element (48), which cooperates with a second indexing element (64, 66) arranged on the case (12) so as to index the insert (30) longitudinally.Type: GrantFiled: September 19, 2007Date of Patent: March 24, 2009Assignee: Montres Breguet SAInventors: Jérôme Chevalier, Dominique Ruggiero
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Publication number: 20080303181Abstract: The invention relates to compositions based on Ce-stabilized ZrO2, and single- and multi-colored blanks made from oxide ceramics, and a process for their preparation, in which oxide ceramic powder is coated with a coloring substance, the coated powders are preferably graded and at least one colored powder is filled into a compression mould, the colored powder or powders are compressed to produce a shaped body, and the compressed shaped body is sintered to produce a blank, and to the use of these blanks for the preparation of dental restorations. The compositions exhibit high fracture toughness and high flexural strength.Type: ApplicationFiled: June 13, 2008Publication date: December 11, 2008Applicant: Ivoclar Vivadent AGInventors: Wolfram Holand, Christian Ritzberger, Elke Apel, Frank Rothbrust, Jerome Chevalier, Dmitri Brodkin
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Publication number: 20080068933Abstract: The wristwatch with a reversible case (12) is provided with a wristband, each end strand of which includes an insert (30) which is pivotably and slidably mounted on the case (12) via a trunnion (32). Each insert (30) includes at least two indexed angular positions, which respectively correspond to two positions of use of the case (12), and at least one longitudinal rest position wherein the insert (30) is blocked from pivoting by a male element (36) fitting inside a female element (38), one of the elements (36) being arranged on the case (12), the other element (38) being arranged on the insert (30), and a longitudinal pivoting position wherein the insert (30) is shifted longitudinally outwards and wherein the insert (30) is free to pivot. The invention is characterized in that each trunnion (32) includes a first indexing element (48), which cooperates with a second indexing element (64, 66) arranged on the case (12) so as to index the insert (30) longitudinally.Type: ApplicationFiled: September 19, 2007Publication date: March 20, 2008Applicant: MONTRES BREGUET SAInventors: Jerome Chevalier, Dominique Ruggiero
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Publication number: 20080038534Abstract: The invention relates to porous bioglass and to the preparation method thereof. More specifically, the invention relates to a solid, porous crystalline or partially-crystalline composition containing at least SiO2, Ca<SB>O</SB>, Na2O, and P2O5, comprising micropores and macropores. The invention is characterised in that: the pore ratio varies between 50% and 80%, preferably between 60 and 75%, and is measured using the geometric method; the average diameter of the macropores varies between 100 and 1250 micrometers, preferably between 150 and 300 micrometers; the average diameter of the micropores is less than or equal to 5 micrometers; and the compression strength varies between 7 MPa and 70 MPa. The invention also relates to the method of preparing one such composition and to such a composition treated with a physiological liquid having an ionic composition similar to that of human plasma. The invention also relates to an implant which is made from one such composition.Type: ApplicationFiled: July 25, 2005Publication date: February 14, 2008Applicant: INSTITUT NATIONAL DES SCIENCES APPLIQUEESInventors: Rachid Zenati, Gilbert Fantozzi, Jerome Chevalier, Mourad Arioua
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Patent number: 7280440Abstract: The invention proposes a timepiece (10) including a striking mechanism (20), and including a control device (28) for activating an element (22) releasing the striking mechanism (20), via a control surface (64) carried by a piston (32), characterized in that a resilient transmission element (68) is arranged between the piston (32) and the release element (22) and in that the travel of the piston (32) includes an active travel, from the rest position of the piston (32) to an intermediate position corresponding to the stop position of the release element (22), during which the travel of the piston (32) is connected to the travel of the release element (22) via the resilient transmission element (68), and a passive travel during which the piston (32) slides against the resilient transmission element (68).Type: GrantFiled: June 27, 2006Date of Patent: October 9, 2007Assignee: Montres Breguet S.A.Inventors: Eric Goeller, Jérôme Chevalier
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Publication number: 20060291335Abstract: The invention proposes a timepiece (10) including a striking mechanism (20), and including a control device (28) for activating an element (22) releasing the striking mechanism (20), via a control surface (64) carried by a piston (32), characterized in that a resilient transmission element (68) is arranged between the piston (32) and the release element (22) and in that the travel of the piston (32) includes an active travel, from the rest position of the piston (32) to an intermediate position corresponding to the stop position of the release element (22), during which the travel of the piston (32) is connected to the travel of the release element (22) via the resilient transmission element (68), and a passive travel during which the piston (32) slides against the resilient transmission element (68).Type: ApplicationFiled: June 27, 2006Publication date: December 28, 2006Applicant: MONTRES BREGUET SAInventors: Eric Goeller, Jerome Chevalier