Patents by Inventor Bruce Alpert

Bruce Alpert 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: 20170049664
    Abstract: An endodontic filling material comprising a biodegradable thermoplastic polymer. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Application
    Filed: October 12, 2016
    Publication date: February 23, 2017
    Inventors: Weitao Jia, Bruce Alpert
  • Patent number: 9492360
    Abstract: An obturator in which a filling material includes a biodegradable thermoplastic polymer. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: November 15, 2016
    Assignee: PENTRON CLINICAL TECHNOLOGIES, LLC
    Inventors: Weitao Jia, Bruce Alpert
  • Publication number: 20070148616
    Abstract: An endodontic post and obturator comprising a filling material, wherein the filling material comprises a biodegrable thermoplastic polymer. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials.
    Type: Application
    Filed: January 16, 2007
    Publication date: June 28, 2007
    Applicant: Pentron Clinical Technologies, LLC
    Inventors: Weitao Jia, Bruce Alpert
  • Publication number: 20070131139
    Abstract: An endodontic post comprising a dental filling material, wherein the filling material comprises a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Application
    Filed: February 5, 2007
    Publication date: June 14, 2007
    Inventors: Weitao Jia, Bruce Alpert
  • Patent number: 7211136
    Abstract: A dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: May 1, 2007
    Assignee: Pentron Clinical Technologies, LLC
    Inventors: Weitao Jia, Martin Trope, Bruce Alpert
  • Patent number: 7204875
    Abstract: An dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: April 17, 2007
    Assignee: Pentron Clinical Technologies, LLC
    Inventors: Weitao Jia, Bruce Alpert
  • Patent number: 7204874
    Abstract: An endodontic filling material comprising a biodegrable thermoplastic polymer. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: April 17, 2007
    Assignee: Pentron Clinical Technologies, LLC
    Inventors: Weitao Jia, Bruce Alpert
  • Patent number: 7168952
    Abstract: An endodontic post comprises a combined endodontic post and tip of filling material such as thermoplastic material in a single unit. Obuturating systems are provided by an endodontic carrier and attached filling material. The post and obturator include a protrusion or depression on the tip section of the device for better attachment of the filling material to the device. Alternatively the post and obuturator are fabricated of a tube having a tunnel extending therethrough into which filling material is injected. The filling material extends out of the apical section of the post and obturator to form a filler cone.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: January 30, 2007
    Assignees: Pentron Clinical Technologies, LLC
    Inventors: Ajit Karmaker, Larry A. Lopez, Bruce Alpert, Bruce A. Finnigan
  • Patent number: 7163401
    Abstract: An endodontic post comprises a combined endodontic post and tip of filling material such as thermoplastic material in a single unit. Obuturating systems are provided by an endodontic carrier and attached filling material. The post and obturator include a protrusion or depression on the tip section of the device for better attachment of the filling material to the device. Alternatively the post and obuturator are fabricated of a tube having a tunnel extending therethrough into which filling material is injected. The filling material extends out of the apical section of the post and obturator to form a filler cone.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: January 16, 2007
    Assignee: Pentron Clinical Technologies, LLC
    Inventors: Ajit Karmaker, Larry A. Lopez, Bruce Alpert, Bruce A. Finnigan
  • Patent number: 7086864
    Abstract: An endodontic post comprising a combined endodontic post and filling material tip in a single unit. To use the post unit, the device is placed in an oven or heater to heat and soften the thermoplastic material. The device will then be placed in a root canal that has been opened to a predetermined dimension by use of endodontic files, to seal the apical end. If necessary, the gutta percha can be compacted toward the apex, while it is still in the softened state, to ensure the apex is adequately sealed. The post is then cemented into place by lining the canal walls with a bonding agent and filling the interface between the post and the walls of the canal with a dual cure resin cement. This will result in a coronal seal of the canal via resin restorative material and an apical seal of the canal by means of gutta percha and sealant. The remaining portion of the post, extending supra-gingivally, will be used to build a core around it. Any excess will be cut off.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: August 8, 2006
    Assignees: Pentron Clinical Technologies, LLC
    Inventors: Larry A. Lopez, Bruce A. Finnigan, Ajit Karmaker, Bruce Alpert, Weitao Jia
  • Publication number: 20050069836
    Abstract: A dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Application
    Filed: June 18, 2003
    Publication date: March 31, 2005
    Inventors: Weitao Jia, Martin Trope, Bruce Alpert
  • Publication number: 20050003328
    Abstract: An endodontic post comprises a combined endodontic post and tip of filling material such as thermoplastic material in a single unit. Obuturating systems are provided by an endodontic carrier and attached filling material. The post and obturator include a protrusion or depression on the tip section of the device for better attachment of the filling material to the device. Alternatively the post and obuturator are fabricated of a tube having a tunnel extending therethrough into which filling material is injected. The filling material extends out of the apical section of the post and obturator to form a filler cone.
    Type: Application
    Filed: August 1, 2003
    Publication date: January 6, 2005
    Inventors: Ajit Karmaker, Larry Lopez, Bruce Alpert, Bruce Finnigan
  • Publication number: 20040265783
    Abstract: An endodontic post comprises a combined endodontic post and tip of filling material such as thermoplastic material in a single unit. Obuturating systems are provided by an endodontic carrier and attached filling material. The post and obturator include a protrusion or depression on the tip section of the device for better attachment of the filling material to the device. Alternatively the post and obuturator are fabricated of a tube having a tunnel extending therethrough into which filling material is injected. The filling material extends out of the apical section of the post and obturator to form a filler cone.
    Type: Application
    Filed: August 1, 2003
    Publication date: December 30, 2004
    Inventors: Ajit Karmaker, Larry A. Lopez, Bruce Alpert, Bruce A. Finnigan
  • Publication number: 20040245663
    Abstract: A ceramic tape is provided in its green state so that it is malleable and formable to a mold for forming a dental restoration, but will not break or crack as it is applied to the mold. Pressure may be applied to further form or adapt the ceramic tape to the shape of the mold. Heat is applied simultaneously with pressure or in a separate step to achieve high density and strength in the ceramic material. A vacuum atmosphere may be used with the application of pressure and/or heat. One or more layers of surface material such as porcelain or composite resin may be applied to the ceramic to form the dental restoration. The process is useful in the manufacture of dental materials or restorations including but not limited to orthodontic appliances, bridges, space maintainers, tooth replacement appliances, splints, crowns, partial crowns, dentures, posts; teeth, jackets, inlays, onlays, facing, veneers, facets, implants, abutments, cylinders, and connectors.
    Type: Application
    Filed: September 10, 2003
    Publication date: December 9, 2004
    Inventors: Joseph A. MacDougald, Carlino Panzera, Weitao Jia, Dmitri Brodkin, Martin L. Schulman, Paul Panzera, Bruce Alpert
  • Publication number: 20040248067
    Abstract: An endodontic post comprising a combined endodontic post and filling material tip in a single unit. To use the post unit, the device is placed in an oven or heater to heat and soften the thermoplastic material. The device will then be placed in a root canal that has been opened to a predetermined dimension by use of endodontic files, to seal the apical end. If necessary, the gutta percha can be compacted toward the apex, while it is still in the softened state, to ensure the apex is adequately sealed. The post is then cemented into place by lining the canal walls with a bonding agent and filling the interface between the post and the walls of the canal with a dual cure resin cement. This will result in a coronal seal of the canal via resin restorative material and an apical seal of the canal by means of gutta percha and sealant. The remaining portion of the post, extending supra-gingivally, will be used to build a core around it. Any excess will be cut off.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 9, 2004
    Inventors: Larry A. Lopez, Bruce A. Finnigan, Ajit Karmaker, Bruce Alpert, Weitao Jia
  • Publication number: 20040014009
    Abstract: A method for etching and treating a tooth surface prior to restoration, comprising a solution comprising of an —SO3 terminated compound resin, such as an —SO3H compound resin, and an aldehyde desensitizing compound. In practice, the composition is applied to the tooth surface and not subsequently washed prior to application of an adhesive or other restorative material.
    Type: Application
    Filed: February 10, 2003
    Publication date: January 22, 2004
    Inventors: Weitao Jia, Bruce Alpert, Martin L. Schulman
  • Patent number: 6648645
    Abstract: A ceramic tape is provided in its green state so that it is malleable and formable to a mold for forming a dental restoration, but will not break or crack as it is applied to the mold. Pressure may be applied to further form or adapt the ceramic tape to the shape of the mold. Heat is applied simultaneously with pressure or in a separate step to achieve high density and strength in the ceramic material. A vacuum atmosphere may be used with the application of pressure and/or heat. One or more layers of surface material such as porcelain or composite resin may be applied to the ceramic to form the dental restoration. The process is useful in the manufacture of dental materials or restorations including but not limited to orthodontic appliances, bridges, space maintainers, tooth replacement appliances, splints, crowns, partial crowns, dentures, posts, teeth, jackets, inlays, onlays, facing, veneers, facets, implants, abutments, cylinders, and connectors.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: November 18, 2003
    Assignee: Jeneric/Pentron Incorporated
    Inventors: Joseph A. MacDougald, Carlino Panzera, Weitao Jia, Dmitri Brodkin, Martin L. Schulman, Paul Panzera, Bruce Alpert
  • Patent number: 6592372
    Abstract: A method for etching and treating a tooth surface prior to restoration, comprising a solution comprising of an —SO3 terminated compound resin, such as an —SO3H compound resin, and an aldehyde desensitizing compound. In practice, the composition is applied to the tooth surface and not subsequently washed prior to application of an adhesive or other restorative material.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: July 15, 2003
    Assignee: Jeneric/Pentron Incorporated
    Inventors: Weitao Jia, Bruce Alpert, Martin L. Schulman
  • Publication number: 20030124483
    Abstract: An dental filling material comprising a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Application
    Filed: November 26, 2002
    Publication date: July 3, 2003
    Inventors: Weitao Jia, Bruce Alpert
  • Publication number: 20030113686
    Abstract: An endodontic filling material comprising a biodegrable thermoplastic polymer. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.
    Type: Application
    Filed: October 24, 2002
    Publication date: June 19, 2003
    Inventors: Weitao Jia, Bruce Alpert