Patents by Inventor Benjamin Jiemin Sun

Benjamin Jiemin Sun 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: 10849724
    Abstract: This invention relates to printable high strength/toughness polymerizable material systems for making dental products such as artificial teeth, dentures, splints, veneers, inlays, onlays, orthodontic appliances, aligners, copings, frame patterns, crowns and bridges and the like. A DLP, stereolithography, modified or their modification and combination based printer is used to cure polymerizable material in several different methods of this invention to build-up the object. The resulting three-dimensional object has good dimensional stability.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: December 1, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin Sun, Andrew M. Lichkus
  • Publication number: 20200170892
    Abstract: A dental composition that includes one or more monomers, a plurality of crosslinking agents, and an initiator.
    Type: Application
    Filed: February 5, 2020
    Publication date: June 4, 2020
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin Sun, Dan Ammon, Brian Fritsch
  • Patent number: 10639877
    Abstract: This invention relates to rapid prototyping systems, specifically, a continuous moving surface liquid resin system (CMSL) and fast printing method for making any 3D objects, such as dental devices, including but not limited to artificial teeth, dentures, orthodontic appliances, aligners, splints, veneers, inlays, onlays, copings, frame patterns, crowns and bridges and the like. 3D printers, such as DLP or stereolithography printer, are used to cure polymerizable material in a layer-by-layer manner to build-up the object rapidly and continuously.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: May 5, 2020
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin Sun, Jessica Jiaxin Sun
  • Patent number: 10433939
    Abstract: This invention designs and builds multiple layers (two layers or more) of millable dental blocks or disks for milling of various dental devices, specifically denture base blocks or disks of denture base material, where milled teeth cavities to receive artificial denture tooth materials to form final dental devices, such as partial and full dentures. This invention also designs and builds multiple layers (two layers or more) of millable denture base or denture blocks or disks comprised of denture base or/and denture tooth materials to form final dental devices, such as partial and full dentures. A method for manufacturing a layered denture is provided. The invention provides a multiple layered denture base block (or disk) for milling a denture base. The invention also provides a multiple layered denture block (or disk) for milling a denture. Highly shape adjustable or shape memory polymer layer(s) may be used in these multiple layered forms.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: October 8, 2019
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin Sun, Dan Ammon
  • Publication number: 20190152097
    Abstract: This invention relates to rapid prototyping systems, specifically, a composition for a release film comprising one or more base materials selected from the group consisting of silicone, polycarbonate, polyethylene, and polypropylene; and one or more free-radical inhibitors.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Applicant: DENTSPLY SIRONA INC.
    Inventors: Benjamin Jiemin SUN, Andrew M LICHKUS
  • Publication number: 20180055611
    Abstract: This invention designs and builds multiple layers (two layers or more) of millable dental blocks or disks for milling of various dental devices, specifically denture base blocks or disks of denture base material, where milled teeth cavities to receive artificial denture tooth materials to form final dental devices, such as partial and full dentures. This invention also designs and builds multiple layers (two layers or more) of millable denture base or denture blocks or disks comprised of denture base or/and denture tooth materials to form final dental devices, such as partial and full dentures. A method for manufacturing a layered denture is provided. The invention provides a multiple layered denture base block (or disk) for milling a denture base. The invention also provides a multiple layered denture block (or disk) for milling a denture. Highly shape adjustable or shape memory polymer layer(s) may be used in these multiple layered forms.
    Type: Application
    Filed: July 5, 2017
    Publication date: March 1, 2018
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin SUN, Dan AMMON
  • Publication number: 20180000570
    Abstract: This invention relates to printable high strength/toughness polymerizable material systems for making dental products such as artificial teeth, dentures, splints, veneers, inlays, onlays, orthodontic appliances, aligners, copings, frame patterns, crowns and bridges and the like. A DLP, stereolithography, modified or their modification and combination based printer is used to cure polymerizable material in several different methods of this invention to build-up the object. The resulting three-dimensional object has good dimensional stability.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin SUN, Andrew M. LICHKUS
  • Publication number: 20170181933
    Abstract: A dental composition that includes one or more monomers, a plurality of crosslinking agents, and an initiator.
    Type: Application
    Filed: December 28, 2016
    Publication date: June 29, 2017
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin SUN, Dan Ammon, Brian Fritsch
  • Publication number: 20160332367
    Abstract: This invention relates to rapid prototyping systems, specifically, a continuous moving surface liquid resin system (CMSL) and fast printing method for making any 3D objects, such as dental devices, including but not limited to artificial teeth, dentures, orthodontic appliances, aligners, splints, veneers, inlays, onlays, copings, frame patterns, crowns and bridges and the like. 3D printers, such as DLP or stereolithography printer, are used to cure polymerizable material in a layer-by-layer manner to build-up the object rapidly and continuously.
    Type: Application
    Filed: May 16, 2016
    Publication date: November 17, 2016
    Applicant: DENTSPLY SIRONA Inc.
    Inventors: Benjamin Jiemin Sun, Jessica Jiaxin Sun
  • Publication number: 20160288376
    Abstract: This invention relates to rapid prototyping systems, specifically, a composition for a release film comprising one or more base materials selected from the group consisting of silicone, polycarbonate, polyethylene, and polypropylene; and one or more free-radical inhibitors.
    Type: Application
    Filed: March 31, 2016
    Publication date: October 6, 2016
    Applicant: DENTSPLY SIRONA INC.
    Inventors: Benjamin Jiemin SUN, Andrew M. LICHKUS
  • Patent number: 9119692
    Abstract: The invention provides methods of making provisional and long-term dental restorations, particularly dental veneers, implants, crowns and bridges. A shell or restoration form made of polymerizable material having good dimensional shape-stability in its uncured condition is used to make the dental restoration. A polymerizable material is introduced into the cavity of the shell form. The outer shell and injected polymerizable material are polymerized and bond together to form a hardened crown structure. In one embodiment, the restoration can be fabricated indirectly by a dental laboratory. In another version, a dental practitioner can make the restoration chairside for a patient in a dental office.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 1, 2015
    Assignee: DENTSPLY International Inc.
    Inventors: Benjamin Jiemin Sun, Andrew M. Lichkus
  • Publication number: 20150038634
    Abstract: The present invention provides a composition including at least one polymerizable liquid component having at least one rubber impact modifier; at least one polymerization initiator, and at least one polymer component.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 5, 2015
    Inventors: Benjamin Jiemin SUN, Camelia GHERGULESCU, Andrew YOUNG
  • Publication number: 20140131908
    Abstract: This invention relates to printable polymerizable material systems for making dental products such as artificial teeth, dentures, splints, veneers, inlays, onlays, copings, frame patterns, crowns and bridges and the like. A DLP or stereolithography printer is used to cure polymerizable material in a layer-by-layer manner to build-up the object. The resulting three-dimensional object has good dimensional stability.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 15, 2014
    Applicant: DENTSPLY International Inc.
    Inventors: Benjamin Jiemin Sun, Christopher R. Kennedy, Veeraraghavan Sundar, Andrew M. Lichkus
  • Publication number: 20140103557
    Abstract: The invention provides methods of making provisional and long-term dental restorations, particularly dental veneers, implants, crowns and bridges. A shell or restoration form made of polymerizable material having good dimensional shape-stability in its uncured condition is used to make the dental restoration. A polymerizable material is introduced into the cavity of the shell form. The outer shell and injected polymerizable material are polymerized and bond together to form a hardened crown structure. In one embodiment, the restoration can be fabricated indirectly by a dental laboratory. In another version, a dental practitioner can make the restoration chairside for a patient in a dental office.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: Dentsply International Inc.
    Inventors: Benjamin Jiemin SUN, Andrew M. LICHKUS
  • Patent number: 8636928
    Abstract: The invention provides methods of making provisional and long-term dental restorations, particularly dental veneers, implants, crowns and bridges. A shell or restoration form made of polymerizable material having good dimensional shape-stability in its uncured condition is used to make the dental restoration. A polymerizable material is introduced into the cavity of the shell form. The outer shell and injected polymerizable material are polymerized and bond together to form a hardened crown structure. In one embodiment, the restoration can be fabricated indirectly by a dental laboratory. In another version, a dental practitioner can make the restoration chairside for a patient in a dental office.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: January 28, 2014
    Assignee: DENTSPLY International Inc.
    Inventors: Benjamin Jiemin Sun, Andrew Lichkus
  • Patent number: 8067481
    Abstract: The invention provides a low polymerization shrinkage dental composition and a polymerizable dental material selected from the group consisting of wax-like dental material that undergoes ring open polymerization. The dental composition is useful as restorative material and for making artificial teeth, dentures, restoratives, crowns and bridges of high strength dental polymeric material.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: November 29, 2011
    Assignee: Dentsply International, Inc.
    Inventors: Benjamin Jiemin Sun, Andrew Murray Lichkus
  • Publication number: 20110104641
    Abstract: The invention provides methods of making provisional and long-term dental restorations, particularly dental veneers, implants, crowns and bridges. A shell or restoration form made of polymerizable material having good dimensional shape-stability in its uncured condition is used to make the dental restoration. A polymerizable material is introduced into the cavity of the shell form. The outer shell and injected polymerizable material are polymerized and bond together to form a hardened crown structure. In one embodiment, the restoration can be fabricated indirectly by a dental laboratory. In another version, a dental practitioner can make the restoration chairside for a patient in a dental office.
    Type: Application
    Filed: October 1, 2007
    Publication date: May 5, 2011
    Inventors: Benjamin Jiemin Sun, Andrew Lichkus
  • Publication number: 20110081627
    Abstract: The invention provides methods of making provisional and long-term dental restorations, particularly dental veneers, crowns and bridges. In one embodiment, the restoration can be fabricated indirectly by a dental laboratory. In another version, a dental practitioner can make the restoration chairside for a patient in a dental office. A polymerizable dental composite material, which is dimensionally shape-stable in its uncured state, is used to make the restoration. A substructure such as a metal coping can be used to support the polymerizable material. The material includes a polymerizable acrylic compound, polymerization initiator system capable of being activated by light or heat, and preferably a filler material. The resulting dental restoration has good aesthetics, mechanical strength, and margins and contacts.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 7, 2011
    Inventors: Benjamin Jiemin Sun, Andrew Mathias Young, Andrew M. Lichkus
  • Publication number: 20100286435
    Abstract: The invention provides a low polymerization shrinkage dental composition and a polymerizable dental material selected from the group consisting of wax-like dental material that undergoes ring open polymerization. The dental composition is useful as restorative material and for making artificial teeth, dentures, restoratives, crowns and bridges of high strength dental polymeric material.
    Type: Application
    Filed: September 4, 2008
    Publication date: November 11, 2010
    Inventors: Benjamin Jiemin Sun, Andrew Murray Lichkus
  • Publication number: 20090130624
    Abstract: Dental guards, particularly night guards, used by patients to protect their teeth against the effects of grinding and bruxism are provided. Methods and kits for making such dental guards are also included. A light-curable polymerizable arch material is used to fabricate the dental guard. Preferably, the material contains polymerizable acrylic compounds, color-changing cure indicator, and particulate filler. The material is molded to conform to the shape of a dental arch of a patient and light-cured to form the dental guard.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 21, 2009
    Inventors: Benjamin Jiemin Sun, Scott Earl Shaffer, Andrew Mathias Young