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).

  • Publication number: 20240138963
    Abstract: 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: Application
    Filed: January 8, 2024
    Publication date: May 2, 2024
    Applicant: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Patent number: 11918427
    Abstract: 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: Grant
    Filed: June 2, 2022
    Date of Patent: March 5, 2024
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
  • Patent number: 11864962
    Abstract: 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: Grant
    Filed: March 7, 2022
    Date of Patent: January 9, 2024
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Publication number: 20220287807
    Abstract: 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: Application
    Filed: June 2, 2022
    Publication date: September 15, 2022
    Applicant: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
  • Publication number: 20220183801
    Abstract: 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: Application
    Filed: March 7, 2022
    Publication date: June 16, 2022
    Applicant: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Patent number: 11351015
    Abstract: 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: Grant
    Filed: July 1, 2020
    Date of Patent: June 7, 2022
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
  • Patent number: 11266485
    Abstract: 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: Grant
    Filed: May 30, 2019
    Date of Patent: March 8, 2022
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Patent number: 10973616
    Abstract: 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: Grant
    Filed: March 4, 2019
    Date of Patent: April 13, 2021
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Publication number: 20210000574
    Abstract: 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: Application
    Filed: July 1, 2020
    Publication date: January 7, 2021
    Inventors: David Leeson, Terry Reed, Summer Ree Takenaka, Babak Manafighazani, Andrey Lebedev
  • Publication number: 20190274796
    Abstract: 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: Application
    Filed: May 30, 2019
    Publication date: September 12, 2019
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Publication number: 20190192264
    Abstract: 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: Application
    Filed: March 4, 2019
    Publication date: June 27, 2019
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Patent number: 10258440
    Abstract: 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: Grant
    Filed: September 8, 2016
    Date of Patent: April 16, 2019
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Patent number: 10133244
    Abstract: 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: Grant
    Filed: June 13, 2012
    Date of Patent: November 20, 2018
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: David Leeson, Dean Dohi
  • Publication number: 20170065380
    Abstract: 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: Application
    Filed: September 8, 2016
    Publication date: March 9, 2017
    Inventors: David Leeson, Marco A. Jokada, Vaheh Golestanian Nemargrdi, Hossein Madanipour
  • Publication number: 20130338813
    Abstract: 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: Application
    Filed: June 13, 2012
    Publication date: December 19, 2013
    Inventors: David LEESON, Dean DOHI
  • Patent number: 6352994
    Abstract: 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: Grant
    Filed: January 4, 2001
    Date of Patent: March 5, 2002
    Assignee: Merck Sharp & Dohme Limited
    Inventors: 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
  • Publication number: 20010018438
    Abstract: 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: 1
    Type: Application
    Filed: January 4, 2001
    Publication date: August 30, 2001
    Applicant: MERCK SHARP & DOHME LIMITED
    Inventors: 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
  • Patent number: 6200982
    Abstract: Substituted 1H-Pyridinyl-2-ones are useful as GABAA-Alpha 2/3 ligands.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: March 13, 2001
    Assignee: Merck & Dohme Limited
    Inventors: 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
  • Patent number: 6080745
    Abstract: 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: Grant
    Filed: March 12, 1996
    Date of Patent: June 27, 2000
    Assignee: Merck Sharp & Dohme Limited
    Inventors: William Barnaby Davey, Paul David Leeson, Michael Rowley
  • Patent number: 5939436
    Abstract: 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: Grant
    Filed: June 25, 1997
    Date of Patent: August 17, 1999
    Assignee: Merck Sharp & Dohme Ltd.
    Inventors: William Robert Carling, Paul David Leeson, Kevin William Moore