Patents by Inventor Ricardo M. Kauffmann

Ricardo M. Kauffmann 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).

  • Prosthetic apparatus for supporting a user in sitting or standing positions
    Patent number: 6125957
    Abstract: A prosthetic apparatus is electrically operable by a user for lifting the user into standing position and lowering the user into a sitting position by power means operated by the user, the apparatus being a motorized wheelchair.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: October 3, 2000
    Inventor: Ricardo M. Kauffmann
  • Prosthetic device for lifting and lowering a person thereon
    Patent number: 5265689
    Abstract: A prosthetic device operable by a handicapped user of the device for physically lifting and lowering the user's body to and supporting the user's body in an upright standing position and a sitting position. The disclosed prosthetic embodiments are motorized wheel chairs.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: November 30, 1993
    Inventor: Ricardo M. Kauffmann