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).
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Publication number: 20170049664Abstract: 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: ApplicationFiled: October 12, 2016Publication date: February 23, 2017Inventors: Weitao Jia, Bruce Alpert
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Patent number: 9492360Abstract: 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: GrantFiled: January 16, 2007Date of Patent: November 15, 2016Assignee: PENTRON CLINICAL TECHNOLOGIES, LLCInventors: Weitao Jia, Bruce Alpert
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Publication number: 20070148616Abstract: 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: ApplicationFiled: January 16, 2007Publication date: June 28, 2007Applicant: Pentron Clinical Technologies, LLCInventors: Weitao Jia, Bruce Alpert
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Publication number: 20070131139Abstract: 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: ApplicationFiled: February 5, 2007Publication date: June 14, 2007Inventors: Weitao Jia, Bruce Alpert
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Patent number: 7211136Abstract: 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: GrantFiled: June 18, 2003Date of Patent: May 1, 2007Assignee: Pentron Clinical Technologies, LLCInventors: Weitao Jia, Martin Trope, Bruce Alpert
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Patent number: 7204875Abstract: 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: GrantFiled: November 26, 2002Date of Patent: April 17, 2007Assignee: Pentron Clinical Technologies, LLCInventors: Weitao Jia, Bruce Alpert
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Patent number: 7204874Abstract: 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: GrantFiled: October 24, 2002Date of Patent: April 17, 2007Assignee: Pentron Clinical Technologies, LLCInventors: Weitao Jia, Bruce Alpert
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Patent number: 7168952Abstract: 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: GrantFiled: August 1, 2003Date of Patent: January 30, 2007Assignees: Pentron Clinical Technologies, LLCInventors: Ajit Karmaker, Larry A. Lopez, Bruce Alpert, Bruce A. Finnigan
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Patent number: 7163401Abstract: 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: GrantFiled: August 1, 2003Date of Patent: January 16, 2007Assignee: Pentron Clinical Technologies, LLCInventors: Ajit Karmaker, Larry A. Lopez, Bruce Alpert, Bruce A. Finnigan
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Patent number: 7086864Abstract: 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: GrantFiled: June 6, 2002Date of Patent: August 8, 2006Assignees: Pentron Clinical Technologies, LLCInventors: Larry A. Lopez, Bruce A. Finnigan, Ajit Karmaker, Bruce Alpert, Weitao Jia
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Publication number: 20050069836Abstract: 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: ApplicationFiled: June 18, 2003Publication date: March 31, 2005Inventors: Weitao Jia, Martin Trope, Bruce Alpert
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Publication number: 20050003328Abstract: 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: ApplicationFiled: August 1, 2003Publication date: January 6, 2005Inventors: Ajit Karmaker, Larry Lopez, Bruce Alpert, Bruce Finnigan
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Publication number: 20040265783Abstract: 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: ApplicationFiled: August 1, 2003Publication date: December 30, 2004Inventors: Ajit Karmaker, Larry A. Lopez, Bruce Alpert, Bruce A. Finnigan
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Publication number: 20040245663Abstract: 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: ApplicationFiled: September 10, 2003Publication date: December 9, 2004Inventors: Joseph A. MacDougald, Carlino Panzera, Weitao Jia, Dmitri Brodkin, Martin L. Schulman, Paul Panzera, Bruce Alpert
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Publication number: 20040248067Abstract: 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: ApplicationFiled: June 6, 2002Publication date: December 9, 2004Inventors: Larry A. Lopez, Bruce A. Finnigan, Ajit Karmaker, Bruce Alpert, Weitao Jia
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Publication number: 20040014009Abstract: 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: ApplicationFiled: February 10, 2003Publication date: January 22, 2004Inventors: Weitao Jia, Bruce Alpert, Martin L. Schulman
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Patent number: 6648645Abstract: 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: GrantFiled: September 1, 2000Date of Patent: November 18, 2003Assignee: Jeneric/Pentron IncorporatedInventors: Joseph A. MacDougald, Carlino Panzera, Weitao Jia, Dmitri Brodkin, Martin L. Schulman, Paul Panzera, Bruce Alpert
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Patent number: 6592372Abstract: 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: GrantFiled: May 11, 2001Date of Patent: July 15, 2003Assignee: Jeneric/Pentron IncorporatedInventors: Weitao Jia, Bruce Alpert, Martin L. Schulman
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Publication number: 20030124483Abstract: 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: ApplicationFiled: November 26, 2002Publication date: July 3, 2003Inventors: Weitao Jia, Bruce Alpert
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Publication number: 20030113686Abstract: 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: ApplicationFiled: October 24, 2002Publication date: June 19, 2003Inventors: Weitao Jia, Bruce Alpert