Patents by Inventor Johannes von Oppolzer

Johannes von Oppolzer 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).

  • Patent number: 5210196
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: May 11, 1993
    Assignee: BP Chemicals Limited
    Inventor: Johannes von Oppolzer