Patents by Inventor David LEESON
David LEESON 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: 20240138963Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: ApplicationFiled: January 8, 2024Publication date: May 2, 2024Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Patent number: 11918427Abstract: A computer-implemented method of generating a reduction coping includes receiving a digital model comprising a virtual preparation tooth, determining one or more virtual reduction regions on the virtual preparation tooth, and generating a virtual reduction coping comprising one or more exposed regions corresponding to the one or more virtual reduction regions. A method of generating a physical reduction coping includes receiving a 3D digital model of a virtual reduction coping and performing additive manufacturing to generate a physical reduction coping from the virtual reduction coping.Type: GrantFiled: June 2, 2022Date of Patent: March 5, 2024Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
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Patent number: 11864962Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: GrantFiled: March 7, 2022Date of Patent: January 9, 2024Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Publication number: 20220287807Abstract: A computer-implemented method of generating a reduction coping includes receiving a digital model comprising a virtual preparation tooth, determining one or more virtual reduction regions on the virtual preparation tooth, and generating a virtual reduction coping comprising one or more exposed regions corresponding to the one or more virtual reduction regions. A method of generating a physical reduction coping includes receiving a 3D digital model of a virtual reduction coping and performing additive manufacturing to generate a physical reduction coping from the virtual reduction coping.Type: ApplicationFiled: June 2, 2022Publication date: September 15, 2022Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
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Publication number: 20220183801Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: ApplicationFiled: March 7, 2022Publication date: June 16, 2022Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Patent number: 11351015Abstract: A computer-implemented method of generating a reduction coping includes receiving a digital model comprising a virtual preparation tooth, determining one or more virtual reduction regions on the virtual preparation tooth, and generating a virtual reduction coping comprising one or more exposed regions corresponding to the one or more virtual reduction regions. A method of generating a physical reduction coping includes receiving a 3D digital model of a virtual reduction coping and performing additive manufacturing to generate a physical reduction coping from the virtual reduction coping.Type: GrantFiled: July 1, 2020Date of Patent: June 7, 2022Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
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Patent number: 11266485Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: GrantFiled: May 30, 2019Date of Patent: March 8, 2022Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Patent number: 10973616Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: GrantFiled: March 4, 2019Date of Patent: April 13, 2021Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Publication number: 20210000574Abstract: A computer-implemented method of generating a reduction coping includes receiving a digital model comprising a virtual preparation tooth, determining one or more virtual reduction regions on the virtual preparation tooth, and generating a virtual reduction coping comprising one or more exposed regions corresponding to the one or more virtual reduction regions. A method of generating a physical reduction coping includes receiving a 3D digital model of a virtual reduction coping and performing additive manufacturing to generate a physical reduction coping from the virtual reduction coping.Type: ApplicationFiled: July 1, 2020Publication date: January 7, 2021Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
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Publication number: 20190274796Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: ApplicationFiled: May 30, 2019Publication date: September 12, 2019Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Publication number: 20190192264Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: ApplicationFiled: March 4, 2019Publication date: June 27, 2019Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Patent number: 10258440Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: GrantFiled: September 8, 2016Date of Patent: April 16, 2019Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Patent number: 10133244Abstract: Apparatus for producing finished dental restorations at the dentist's chair side from 3D CAD data. These restorations may be manufactured from ceramics, metals and polymers via subtractive means i.e. milling and grinding. A polar compact mechanism has been employed with the implementation of an inverse kinematic transform in the machine control to allow Cartesian programming. The margin following tool path is very computationally intensive and requires many minutes of calculation time and numerical control programs in excess of 10 mb for a typical restoration. Conventionally this would require the user to wait several minutes before running the machine which would increase the wait time for both the patient and the doctor. This problem is solved by allowing the program to be generated in parallel with the machine in the process of actually cutting the restoration.Type: GrantFiled: June 13, 2012Date of Patent: November 20, 2018Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Leeson, Dean Dohi
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Publication number: 20170065380Abstract: A method is provided for shaping a custom dental restoration from a preform, wherein the preform comprises a preform body and a preform stem. A method is further disclosed for generating one or more nesting positions for the restoration design within the geometry of the preform body relative to the position of the preform stem. A method is further disclosed for generating machining instructions based on the selected nesting position to optimize machining for chair-side applications.Type: ApplicationFiled: September 8, 2016Publication date: March 9, 2017Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
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Publication number: 20130338813Abstract: Apparatus for producing finished dental restorations at the dentist's chair side from 3D CAD data. These restorations may be manufactured from ceramics, metals and polymers via subtractive means i.e. milling and grinding. A polar compact mechanism has been employed with the implementation of an inverse kinematic transform in the machine control to allow Cartesian programming. The margin following tool path is very computationally intensive and requires many minutes of calculation time and numerical control programs in excess of 10 mb for a typical restoration. Conventionally this would require the user to wait several minutes before running the machine which would increase the wait time for both the patient and the doctor. This problem is solved by allowing the program to be generated in parallel with the machine in the process of actually cutting the restoration.Type: ApplicationFiled: June 13, 2012Publication date: December 19, 2013Inventors: David LEESON, Dean DOHI
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Patent number: 6352994Abstract: Compounds according to Formula (I) or a salt thereof are selective ligands for GABAA receptors useful for treatment of disorders of the central nervous system:Type: GrantFiled: January 4, 2001Date of Patent: March 5, 2002Assignee: Merck Sharp & Dohme LimitedInventors: Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
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Publication number: 20010018438Abstract: Compounds according to Formula (I) or a salt thereof are selective ligands for GABAA receptors useful for treatment of disorders of the central nervous system: 1Type: ApplicationFiled: January 4, 2001Publication date: August 30, 2001Applicant: MERCK SHARP & DOHME LIMITEDInventors: Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
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Patent number: 6200982Abstract: Substituted 1H-Pyridinyl-2-ones are useful as GABAA-Alpha 2/3 ligands.Type: GrantFiled: February 11, 2000Date of Patent: March 13, 2001Assignee: Merck & Dohme LimitedInventors: Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
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Patent number: 6080745Abstract: A class of fused tricyclic heteroaromatic compounds of formula (I) as defined in claim 1 or a salt thereof or a prodrug thereof, containing a fused pyrazole, oxazole or pyrimidine ring are ligands for dopamine receptor subtypes within the body and are therefore of use in the treatment and/or prevention of disorders of the dopamine system, such as schizophrenia.Type: GrantFiled: March 12, 1996Date of Patent: June 27, 2000Assignee: Merck Sharp & Dohme LimitedInventors: William Barnaby Davey, Paul David Leeson, Michael Rowley
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Patent number: 5939436Abstract: A class of heteroaromatic compounds incorporating a substituted five-membered heteroaromatic nucleus which contains at least two nitrogen atoms are ligands for dopamine receptor subtypes within the body and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia and depression.Type: GrantFiled: June 25, 1997Date of Patent: August 17, 1999Assignee: Merck Sharp & Dohme Ltd.Inventors: William Robert Carling, Paul David Leeson, Kevin William Moore