Patents by Inventor Robert David Buchanan

Robert David Buchanan 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).

  • Papermaking fabric
    Patent number: 5925221
    Abstract: A papermaking fabric primarily for use as a press felt comprises basalt fibers.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: July 20, 1999
    Assignee: Scapa Group PLC
    Inventors: Ian Christison Sayers, Robert David Buchanan