Patents by Inventor Jack H. Hofstetter

Jack H. Hofstetter 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).

  • Medical liquid container with filter vent
    Patent number: 4356012
    Abstract: An improved method for attaching a hydrophobic vent directly to a urinary drainage container without requiring special supplemental donut-shaped sandwich structures for retaining the filter. The substantially improved fusion bond is obtained by a special seal structure formed by a die having two protruding fusion ribs separated by a relief groove. The seal structure formed by such a die permits direct sealing of a silicone treated hydrophobic vent to a thermoplastic bag wall with a firm viable seal.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: October 26, 1982
    Assignee: American Hospital Supply Corporation
    Inventor: Jack H. Hofstetter
  • Urine collection container with coupling for suspension line
    Patent number: 4189789
    Abstract: A urine collection bag with a rigid handle connected to the bag, and this handle has a pair of spaced apart openings with lead-in slots oriented relative to the openings for easy nonthreading insertion of a flexible suspension line which is retained in the opening for hanging the container.
    Type: Grant
    Filed: August 25, 1978
    Date of Patent: February 26, 1980
    Assignee: American Hospital Supply Corporation
    Inventor: Jack H. Hofstetter