Patents by Inventor Doris Osterkamp

Doris Osterkamp 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).

  • Mechanically sealing closure for receptables
    Patent number: 5962094
    Abstract: The present invention relates to a closure giving a tight mechanical seal and preferably made from metal or plastic, with an insert on its inner side as a sealing element for containers, in particular for bottles and glassware, where the insert is composed of at least one polyolefin which can be prepared using catalysts selected from the class consisting of the metallocenes.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: October 5, 1999
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Doris Osterkamp, Peter Nussen