Patents by Inventor Gregory K. Anderson

Gregory K. Anderson 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).

  • Streamlined T-shaped intrauterine device
    Patent number: 4562835
    Abstract: An intrauterine contraceptive device of a Tatum T shape which carries copper sleeves on its arms wherein the arm portion carrying the sleeve is of a smaller diameter than the remaining portion of the arm. This arrangement allows for minimization or elimination of an exposed and elevated copper sleeve edge which may abrade the uterus on insertion and/or removal.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: January 7, 1986
    Assignee: Ortho Pharmaceutical (Canada) Ltd.
    Inventor: Gregory K. Anderson