Patents by Inventor Virginia A. Shen

Virginia A. Shen 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).

  • Ratchet type dispenser for dental materials
    Patent number: 4693684
    Abstract: A ratchet-type dispenser for dental materials is disclosed. The ratchet is activated by a drive pawl and is prevented from returning by a detent pawl. The drive pawl and detent pawl are activated by the same lever arm.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: September 15, 1987
    Assignee: Johnson & Johnson Dental Products Company
    Inventors: William J. Blatherwick, Leslie Hamilton, Robert D. Holewinski, Virginia A. Shen, Jeffrey Kapec, Kazuna Tanaka
  • Direct delivery unit for application of dental materials or the like
    Patent number: D297566
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: September 6, 1988
    Assignee: Johnson & Johnson Consumer Products, Inc.
    Inventors: William J. Blatherwick, Leslie Hamilton, Robert D. Holewinski, Virginia A. Shen, Jeffrey Kapec, Kazuna Tanaka