Patents by Inventor John Mitchell Talbot

John Mitchell Talbot 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).

  • Marking instrument with sealable diaphragm
    Patent number: 5823697
    Abstract: A marking instrument, e.g. a felt tip marker, has a retractable marking tip (4) carried by a marker unit (5) housed within the barrel, and a rolling diaphragm (10) connecting between the marker unit and barrel to form a sealed envelope around the tip (4) when the tip is retracted. Upon retraction of the tip the marker unit rotates to twist the diaphragm and close the envelope.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: October 20, 1998
    Assignee: The Gillette Company
    Inventor: John Mitchell Talbot