Patents by Inventor John C. Subelka

John C. Subelka 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: 20040209974
    Abstract: A dental composite material includes a hardenable resin matrix and a filler component. The filler component includes (a) a first plurality of preferably glass particles having an average particle size of from about 1 to about 10 micrometers; (b) a second plurality of preferably glass particles having an average particle size of from about 0.1 to about 1 micrometers; and, (c) a plurality of filler particles having an average particle size of from about 0.01 to about 0.04 micrometers. A method according to the invention includes compacting a dental composite material into a prepared tooth cavity, wherein the material has a packability index above about 300 g/mm2.
    Type: Application
    Filed: July 22, 2003
    Publication date: October 21, 2004
    Applicant: DENTSPLY Research & Development Corp.
    Inventors: John C. Subelka, Steven R. Jefferies, Donald A. Kapperman, Paul D. Hammesfahr, Paul A. Silver
  • Publication number: 20040209975
    Abstract: A dental composite material includes a hardenable resin matrix and a filler component. The filler component includes (a) a first plurality of preferably glass particles having an average particle size of from about 1 to about 10 micrometers; (b) a second plurality of preferably glass particles having an average particle size of from about 0.1 to about 1 micrometers; and, (c) a plurality of filler particles having an average particle size of from about 0.01 to about 0.04 micrometers. A method according to the invention includes compacting a dental composite material into a prepared tooth cavity, wherein the material has a packability index above about 300 g/mm2.
    Type: Application
    Filed: May 13, 2004
    Publication date: October 21, 2004
    Inventors: John C. Subelka, Steven R. Jefferies, Donald A. Kapperman, Paul D. Hammesfahr, Paul A. Silver
  • Publication number: 20040167246
    Abstract: A dental composite material includes a hardenable resin matrix and a filler component. The filler component includes (a) a first plurality of preferably glass particles having an average particle size of from about 1 to about 10 micrometers; (b) a second plurality of preferably glass particles having an average particle size of from about 0.1 to about 1 micrometers; and, (c) a plurality of filler particles having an average particle size of from about 0.01 to about 0.04 micrometers. A method according to the invention includes compacting a dental composite material into a prepared tooth cavity, wherein the material has a packability index above about 300 g/mm2.
    Type: Application
    Filed: February 26, 2004
    Publication date: August 26, 2004
    Applicant: DENTSPLY Research & Development Corp.
    Inventors: John C. Subelka, Steven R. Jefferies, Donald A. Kapperman, Paul D. Hammesfahr, Paul A. Silver
  • Patent number: 6696507
    Abstract: A dental composite material includes a hardenable resin matrix and a filler component. The filler component includes (a) a first plurality of preferably glass particles having an average particle size of from about 1 to about 10 micrometers; (b) a second plurality of preferably glass particles having an average particle size of from about 0.1 to about 1 micrometers; and, (c) a plurality of filler particles having an average particle size of from about 0.01 to about 0.04 micrometers. A method according to the invention includes compacting a dental composite material into a prepared tooth cavity, wherein the material has a packability index above about 300 g/mm2.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: February 24, 2004
    Assignee: Dentsply Research & Development Corp.
    Inventors: John C. Subelka, Steven R. Jefferies, Donald A. Kapperman, Paul D. Hammesfahr, Paul A. Silver
  • Publication number: 20030060532
    Abstract: A dental composite material includes a hardenable resin matrix and a filler component. The filler component includes (a) a first plurality of preferably glass particles having an average particle size of from about 1 to about 10 micrometers; (b) a second plurality of preferably glass particles having an average particle size of from about 0.1 to about 1 micrometers; and, (c) a plurality of filler particles having an average particle size of from about 0.01 to about 0.04 micrometers. A method according to the invention includes compacting a dental composite material into a prepared tooth cavity, wherein the material has a packability index above about 300 g/mm2.
    Type: Application
    Filed: January 4, 2002
    Publication date: March 27, 2003
    Applicant: DENTSPLY Research & Development Corp.
    Inventors: John C. Subelka, Steven R. Jefferies, Donald A. Kapperman, Paul D. Hammesfahr, Paul A. Silver
  • Patent number: 6353040
    Abstract: A dental composite material includes a hardenable resin matrix and a filler component. The filler component includes (a) a first plurality of preferably glass particles having an average particle size of from about 1 to about 10 micrometers; (b) a second plurality of preferably glass particles having an average particle size of from about 0.1 to about 1 micrometers; and, (c) a plurality of filler particles having an average particle size of from about 0.01 to about 0.04 micrometers. A method according to the invention includes compacting a dental composite material into a prepared tooth cavity, wherein the material has a packability index above about 300 g/mm2.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: March 5, 2002
    Assignee: Dentsply Research & Development Corp.
    Inventors: John C. Subelka, Steven R. Jefferies, Donald A. Kapperman, Paul D. Hammesfahr, Paul A. Silver
  • Patent number: 6262142
    Abstract: A method and material for forming translucent wear resistant dental enamel and the dental enamel material formed which has an opacity less than 50 percent and a localized wear volume loss of less than 0.025 mm3. The dental enamel material is formed from a polymerizable matrix and a filler. The material for forming translucent wear resistant dental enamel having an opacity less than 50 percent, a localized wear volume loss of less than 0.025 mm3 and a localized extended wear volume loss of less than 0.04 mm3, comprises a polymerizable matrix forming liquid and inorganic filler particles. The liquid comprises polymerizable material having a first refractive index. The filler comprising a first plurality of particles having a second refractive index. The first plurality of particles being formed from a low and a high median particle size plurality of particles. The low median particle size plurality of particles having a median particle size between 0.1 and 1.0 micrometers.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: July 17, 2001
    Assignee: DENTSPLY Research & Development
    Inventors: Xiuling Wang, John C. Subelka, Steven R. Jefferies, Paul D. Hammesfahr, Paul A. Silver
  • Patent number: 4162163
    Abstract: A powder-liquid system for preparing dispersions useful for coating gold and gold alloy castings for dental bridges and crowns which comprises (1) a gold powder and (2) a liquid vehicle suitable for dispersing said gold powder which comprises a solution of a borate salt and a tin salt in an organic solvent.The gold powder preferably has an average particle size of from between 5 to 16 um, the tin salt is preferably stannous chloride, the borate salt is preferably dilithium tetraborate and the organic solvent is a glycol such as propylene glycol. The gold powder is dispersed in said liquid vehicle at a volume/volume ratio of from 0.5/.sub.1 to 1.5/.sub.1 prior to use.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: July 24, 1979
    Assignee: Johnson & Johnson
    Inventor: John C. Subelka