Patents by Inventor David Christopher Leeson
David Christopher 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: 20240090975Abstract: A method is provided for shaping a custom anterior 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: November 29, 2023Publication date: March 21, 2024Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: Marco Antonio Jokada, David Christopher Leeson, Vaheh Golestanian Nemagrdi, Prabhakar Thirugnanasambandam, Kenad Destanovic
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Patent number: 11915403Abstract: Disclosed herein are example embodiments of methods and systems for identifying manufacturing defects of a manufactured dentition model. One of the methods for performing quality control comprises: determining whether the manufactured dentition model is a good or a defective product based on a statistical characteristic of a differences model. The differences model can be generated based on differences between a scanned 3D patient-dentition data and a scanned 3D manufactured-dentition data. The scanned 3D patient-dentition data can be generated using 3D data of a patient's dentition, and the scanned 3D manufactured-dentition data can be generated using 3D data of the manufactured dentition model. The manufactured dentition model can be a 3D printed model.Type: GrantFiled: May 13, 2022Date of Patent: February 27, 2024Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Abhishek Babasaheb Ajri, Vaheh Golestanian Nemagrdi, Marco Antonio Jokada, David Christopher Leeson
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Publication number: 20240028782Abstract: A computer-implemented method and system of virtual dental restoration design automation includes: receiving a 3D virtual dental model of at least a portion of a patient's dentition, the 3D virtual dental model comprising at least one virtual preparation tooth, the virtual preparation tooth comprising a digital representation of a physical preparation tooth prepared by a dentist; performing an automated virtual restoration design using the 3D virtual dental model; displaying virtually to the dentist one or more physical preparation tooth issues detected while performing the automated virtual restoration design; and displaying virtually to the dentist a generated virtual restoration for one or more adjustments where no physical preparation tooth issues are detected while performing the automated virtual restoration design.Type: ApplicationFiled: July 18, 2023Publication date: January 25, 2024Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: Michael J. Selberis, Sergei Azernikov, David Christopher Leeson, Maksim Malkov
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Patent number: 11850110Abstract: A method is provided for shaping a custom anterior 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: January 30, 2023Date of Patent: December 26, 2023Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Marco Antonio Jokada, David Christopher Leeson, Vaheh Golestanian Nemagrdi, Prabhakar Thirugnanasambandam, Kenad Destanovic
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Publication number: 20230172690Abstract: A method is provided for shaping a custom anterior 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 30, 2023Publication date: June 8, 2023Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: Marco Antonio Jokada, David Christopher Leeson, Vaheh Golestanian Nemagrdi, Prabhakar Thirugnanasambandam, Kenad Destanovic
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Patent number: 11564773Abstract: A method is provided for shaping a custom anterior 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: October 30, 2020Date of Patent: January 31, 2023Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Marco Antonio Jokada, David Christopher Leeson, Vaheh Golestanian Nemagrdi, Prabhakar Thirugnanasambandam, Kenad Destanovic
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Patent number: 11559378Abstract: Systems and methods are provided for scanning a dental impression to obtain a digital model of a patient's dentition as an input to computer aided design (CAD) and computer aided manufacturing (CAM) methods for producing dental prostheses.Type: GrantFiled: November 17, 2017Date of Patent: January 24, 2023Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Sergey Nikolskiy, David Christopher Leeson, Shih-Kai Lai, Loraine Allessandra Queji Silva
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Publication number: 20220277436Abstract: Disclosed herein are example embodiments of methods and systems for identifying manufacturing defects of a manufactured dentition model. One of the methods for performing quality control comprises: determining whether the manufactured dentition model is a good or a defective product based on a statistical characteristic of a differences model. The differences model can be generated based on differences between a scanned 3D patient-dentition data and a scanned 3D manufactured-dentition data. The scanned 3D patient-dentition data can be generated using 3D data of a patient's dentition, and the scanned 3D manufactured-dentition data can be generated using 3D data of the manufactured dentition model. The manufactured dentition model can be a 3D printed model.Type: ApplicationFiled: May 13, 2022Publication date: September 1, 2022Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: Abhishek Babasaheb Ajri, Vaheh Golestanian Nemagrdi, Marco Antonio Jokada, David Christopher Leeson
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Publication number: 20220265401Abstract: A system is disclosed for processing a plurality of customized dental restorations from individual millable material blocks in an automated process. The system comprises processing units that may comprise one or more of a milling center comprising one or more milling units, a plurality of material blocks a separating unit, a scrap disposal unit, a heating unit and a cooling unit. A carrier for holding a plurality of individual workpieces in spaced arrangement is also disclosed for use in the system.Type: ApplicationFiled: May 13, 2022Publication date: August 25, 2022Applicant: James R. Glidewell Dental Ceramics, Inc.Inventors: David Christopher Leeson, James Fidel Zamora, Dong Hee Phee, Nicolas Ziegler
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Patent number: 11331172Abstract: A system is disclosed for processing a plurality of customized dental restorations from individual millable material blocks in an automated process. The system comprises processing units that may comprise one or more of a milling center comprising one or more milling units, a plurality of material blocks a separating unit, a scrap disposal unit, a heating unit and a cooling unit. A carrier for holding a plurality of individual workpieces in spaced arrangement is also disclosed for use in the system.Type: GrantFiled: October 7, 2019Date of Patent: May 17, 2022Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Christopher Leeson, James Fidel Zamora, Dong Hee Phee, Nicolas Ziegler
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Patent number: 11334977Abstract: Disclosed herein are example embodiments of methods and systems for identifying manufacturing defects of a manufactured dentition model. One of the methods for performing quality control comprises: determining whether the manufactured dentition model is a good or a defective product based on a statistical characteristic of a differences model. The differences model can be generated based on differences between a scanned 3D patient-dentition data and a scanned 3D manufactured-dentition data. The scanned 3D patient-dentition data can be generated using 3D data of a patient's dentition, and the scanned 3D manufactured-dentition data can be generated using 3D data of the manufactured dentition model. The manufactured dentition model can be a 3D printed model.Type: GrantFiled: October 17, 2019Date of Patent: May 17, 2022Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Abhishek Babasaheb Ajri, Vaheh Golestanian Nemagrdi, Marco Antonio Jokada, David Christopher Leeson
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Publication number: 20220108453Abstract: Disclosed are example embodiments of methods and systems for identifying and quantifying manufacturing defects of a manufactured dental prosthesis. Certain embodiments of the system for performing quality control on manufactured dental prostheses includes: a quality control module configured to determine whether the dental prosthesis is a good or a defective product based at least on a differences model generated by comparing a design model and a scanned model of the manufactured dental prosthesis.Type: ApplicationFiled: December 15, 2021Publication date: April 7, 2022Inventors: Abhishek Babasaheb Ajri, Vaheh Golestanian Nemagrdi, Marco Antonio Jokada, David Christopher Leeson
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Patent number: 11210788Abstract: Disclosed are example embodiments of methods and systems for identifying and quantifying manufacturing defects of a manufactured dental prosthesis. Certain embodiments of the system for performing quality control on manufactured dental prostheses includes: a quality control module configured to determine whether the dental prosthesis is a good or a defective product based at least on a differences model generated by comparing a design model and a scanned model of the manufactured dental prosthesis.Type: GrantFiled: June 28, 2019Date of Patent: December 28, 2021Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Abhishek Babasaheb Ajri, Vaheh Golestanian Nemagrdi, Marco Antonio Jokada, David Christopher Leeson
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Patent number: 11120179Abstract: Disclosed are example embodiments of methods and systems for identifying and quantifying manufacturing defects of a manufactured dental prosthesis. Certain embodiments of the system for performing quality control on manufactured dental prostheses includes: an analysis module to best fit a scanned 3D data model of a manufactured dental prosthesis with a computer-aided design (CAD) model of the same manufactured dental prosthesis and to generate a differences model; and a quality controller to determine whether the manufactured dental prosthesis is a good or a defective product based on a statistical characteristic of the differences model.Type: GrantFiled: March 22, 2018Date of Patent: September 14, 2021Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Abhishek Babasaheb Ajri, Vaheh Golestanian Nemagrdi, Marco Antonio Jokada, David Christopher Leeson
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Publication number: 20210236238Abstract: Disclosed are example embodiments of methods and systems for improving teeth appearance and repositioning of the teeth. One of the systems is an appliance that includes: an outer shell with simulated teeth that approximate a final teeth arrangement; and inner cavities configured to receive a patient's teeth and to incrementally reposition the teeth toward the final teeth arrangement.Type: ApplicationFiled: January 30, 2020Publication date: August 5, 2021Inventors: David Christopher Leeson, Michael J. Selberis, Sergey Nikolskiy
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Patent number: 11045291Abstract: A machinable preform for shaping into dental restorations is described that comprises material having suitable strength for use in dental applications without requiring further processing after shaping to strengthen the material (such as sintering). In one embodiment, a preform is comprised of a machinable dental material having a Vickers hardness value in the range of 4HV GPa to 20HV GPa, and comprises a body and a stem that extends from the outer surface of the body that supports the body during shaping. A method for making the machinable preform, and a kit comprising a machinable preform and a grinding tool, are also described.Type: GrantFiled: July 28, 2016Date of Patent: June 29, 2021Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: David Christopher Leeson, Marco A. Jokada, Vaheh Golestanian Nemagrdi, Hossein Madanipour
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Publication number: 20210128272Abstract: A method is provided for shaping a custom anterior 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: October 30, 2020Publication date: May 6, 2021Inventors: Marco Antonio Jokada, David Christopher Leeson, Vaheh Golestanian Nemagrdi, Prabhakar Thirugnanasambandam, Kenad Destanovic
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Publication number: 20200100879Abstract: A system is disclosed for processing a plurality of customized dental restorations from individual millable material blocks in an automated process. The system comprises processing units that may comprise one or more of a milling center comprising one or more milling units, a plurality of material blocks a separating unit, a scrap disposal unit, a heating unit and a cooling unit. A carrier for holding a plurality of individual workpieces in spaced arrangement is also disclosed for use in the system.Type: ApplicationFiled: October 7, 2019Publication date: April 2, 2020Inventors: David Christopher Leeson, James Fidel Zamora, Dong Hee Phee, Nicolas Ziegler
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Patent number: D939712Type: GrantFiled: November 1, 2019Date of Patent: December 28, 2021Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Prabhakar Thirugnanasambandam, Kenad Destanovic, Marco Antonio Jokada, David Christopher Leeson, Vaheh Golestanian Nemagrdi
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Patent number: D997363Type: GrantFiled: November 19, 2021Date of Patent: August 29, 2023Assignee: James R. Glidewell Dental Ceramics, Inc.Inventors: Marco Antonio Jokada, David Christopher Leeson