Patents by Inventor Donald A. Kapperman

Donald A. Kapperman 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).

  • Dental composite restorative material and method of restoring a tooth
    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
  • Dental composite restorative material and method of restoring a tooth
    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
  • Dental composite restorative material and method of restoring a tooth
    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
  • Dental composite restorative material and method of restoring a tooth
    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
  • Dental composite restorative material and method of restroring a tooth
    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
  • Dental composite restorative material and method of restoring a tooth
    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