Patents by Inventor Michael D. Semenuk

Michael D. Semenuk 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).

  • Cage for laboratory animal
    Patent number: 5996535
    Abstract: A cage system for laboratory animal care has a plastic cage with a molded perforated-bottom, a snap-on plenum cage top, a cage top feeder lid and a snap on waste tray. The floor of the cage is shaped with rounded perforations and domed protrusions to deflect both liquid and solid waste down to the attached waste tray. A filtered air supply is introduced into the lid of the cage and passes through orifices in the bottom of the lid, flowing laminarly through the body of the cage and out perforations in the floor over the waste tray. A water supply system for the cage is provided. No bedding is required in the cage. The system is air tight and air in any one cage is isolated from air in all other cages in the system which can be mounted on a rack. A drain for liquids is provided in the waste tray. In an alternate embodiment, the cage has an imperforate floor. A plurality of cages are supported in a rack. Several configurations to support the cage within the rack are provided.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: December 7, 1999
    Assignee: CCR, LLC
    Inventors: Michael D. Semenuk, Richard A. Norwood
  • Lid for the cage of a laboratory animal
    Patent number: D351259
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: October 4, 1994
    Assignee: Mitesha, Inc.
    Inventors: Michael D. Semenuk, Ida L. Semenuk
  • Floor of an animal cage
    Patent number: D383253
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: September 2, 1997
    Assignee: Lenderking Metal Products
    Inventor: Michael D. Semenuk