Patents by Inventor Robert J. Semanchik

Robert J. Semanchik 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).

  • Extended release fragrance dispensing cartridge
    Patent number: 5230867
    Abstract: A cartridge for an air freshener is disclosed, having a pad sealed within a housing by an air-permeable membrane. The density, permeability, and fiber characteristics of the pad and membrane are selected to achieve extended life while maintaining satisfactory air freshening performance.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: July 27, 1993
    Assignee: Waterbury Companies, Inc.
    Inventors: Walter A. Kunze, Robert J. Semanchik
  • Extended release fragrance dispensing cartridge
    Patent number: D335531
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: May 11, 1993
    Assignee: Waterbury Companies, Inc.
    Inventors: Walter A. Kunze, Robert J. Semanchik