Patents by Inventor Helmut Simgen

Helmut Simgen 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).

  • Ampuls and apparatus thereon for opening same
    Patent number: 4964521
    Abstract: The invention relates to opening aids for an ampul which is closed by upper and lower plastic membranes. The opening aids are funnel-shaped sleeves, one of which contains a membrane welded to one of the plastic membranes closing the ampul, and the other of which includes a plastic punch for rupturing the upper membrane.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: October 23, 1990
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Gerhard Wieland, Klaus Steckenreuter, Wolfgang Gernand, Helmut Simgen