Patents by Inventor Donald L. Vermeulen

Donald L. Vermeulen 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).

  • Method and apparatus for shearing tablets
    Patent number: 6244146
    Abstract: A tablet shearing apparatus includes a support frame comprising a top frame member having an opening, a stationary plate secured to the top frame member. The stationary plate includes apertures extending about substantially the entirety of the opening of the top frame member. A movable plate including apertures is disposed above the stationary plate. A drive cylinder is connected through a linkage arm and an actuator arm to the movable plate. A tablet tray having apertures for receiving tablets can be positioned above the movable plate to transfer tablets to the apertures of the movable plate and the stationary plate so that, when individual tablets are supported in the apertures of both the stationary plate and the movable plate, the drive cylinder moves the movable plate relative to the stationary plate and shears the tablets. The tablet shearing apparatus also includes a tablet release gate having keyhole shaped apertures.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: June 12, 2001
    Assignee: Pharmacia & Upjohn Company
    Inventors: Anne Frances Arthur, Douglas Jay Dehaan, Clifford R. Jepsen, Phillip F. Ni, Donald L. Vermeulen, Edward A. Witkoske