Patents by Inventor Carl Panzera

Carl Panzera 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).

  • Low fusing dental porcelains containing fine-grained leucite
    Patent number: 6120591
    Abstract: A dental porcelain composition, comprising a glassy matrix and leucite crystallites embedded therein, and having maturing temperatures in the range from about 600.degree. C. to about 885.degree. C. and CTEs in the range from about 11 to about 19, more preferably in the range from about 11.5 to about 18, and most preferably in the range from about 12 to about 17.5.times.10.sup.-6 /.degree.C. (measured from 25.degree. C. to 500.degree. C.). The tetragonal leucite is preferably both fine-grained (i.e, having average diameters of less than about 7 microns) and uniformly-sized. Preferably, the average diameters are less than about 1 to about 3 microns.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: September 19, 2000
    Assignee: Jeneric/Pentron Incorporated
    Inventors: Dmitri Brodkin, Carl Panzera, Paul Panzera, Jana N. Pruden, Lisa Kaiser, Richard Brightly
  • Crystalline alumina orthodontic bracket
    Patent number: 5109586
    Abstract: An orthodontic bracket is made from crystalline alumina, preferably crystalline alpha-alumina. The bracket comprises a base member for attaching to a tooth and a body member extending from the base member. The body member includes walls that define an archwire groove. The walls comprise crystalline alumina. The bracket has sufficient strength to withstand normal torquing forces imparted by an archwire.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: May 5, 1992
    Assignee: Johnson & Johnson Consumer Products, Inc.
    Inventors: Robin M. F. Jones, Carl Panzera, Robert D. DeLuca
  • Crystalline alumina orthodontic bracket
    Patent number: 5066225
    Abstract: An orthodontic bracket is made from crystalline alumina, preferably crystalline alpha-alumina. The bracket comprises a base member for attaching to a tooth and a body member extending from the base member. The body member includes walls that define an archwire groove. The walls comprise crystalline alumina. The bracket has sufficient strength to withstand normal torquing forces imparted by an archwire.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: November 19, 1991
    Assignee: Johnson & Johnson Consumer Products, Inc.
    Inventors: Robin M. Forbes Jones, Carl Panzera, Robert D. DeLuca
  • Orthodontic brackets made from ion exchange strengthened glass
    Patent number: 4784606
    Abstract: Orthodontic brackets are made from ion exchange strengthened glass. In a preferred embodiment, the glass is a lithium alumino silicate srengthened with sodium ions.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: November 15, 1988
    Assignee: Johnson & Johnson Consumer Products, Inc.
    Inventors: Robin M. F. Jones, Carl Panzera, Robert D. DeLuca