Patents Assigned to Johnson & Johnson Dental Products Co.
  • Patent number: 4492777
    Abstract: The affinity for water of acid-washed barium or strontium glass powder is reduced by a heat treatment.
    Type: Grant
    Filed: November 26, 1982
    Date of Patent: January 8, 1985
    Assignee: Johnson & Johnson Dental Products Co.
    Inventors: Robert K. Denton, Jr., Narayan G. Kumar
  • Patent number: D282279
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: January 21, 1986
    Assignee: Johnson & Johnson Dental Products Co.
    Inventors: Robert D. Holewinski, Leslie Hamilton, William J. Blatherwick
  • Patent number: D289974
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: May 26, 1987
    Assignee: Johnson & Johnson Dental Products Co.
    Inventors: Leslie Hamilton, Robert D. Holewinski, William J. Blatherwick