Patents by Inventor Charles W. Kellstedt, Jr.

Charles W. Kellstedt, Jr. 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).

  • Combined camera and projector/image processor
    Patent number: D332273
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: January 5, 1993
    Assignee: Opti-Copy, Inc.
    Inventors: John R. Maliszewski, Charles W. Kellstedt, Jr., Joel M. Lieblein
  • Stress:strain materials testing instrument
    Patent number: D351804
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: October 25, 1994
    Assignee: Instron Corporation
    Inventors: Charles W. Kellstedt, Jr., Joel Lieblein, Richard J. Mahoney, III, Paulo A. Martin, Graham E. Mead, Ronald K. Pulsifer, David W. Scanlon
  • Hardness tester
    Patent number: D394015
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: May 5, 1998
    Assignee: Instron Corporation
    Inventors: Charles W. Kellstedt, Jr., Joel M. Lieblein
  • Field controller housing
    Patent number: D394842
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: June 2, 1998
    Assignee: The Foxboro Company
    Inventors: Charles W. Kellstedt, Jr., Simon Korowitz, Harris D. Kagan, Harold Lake
  • Non-invasive blood sensing device
    Patent number: D404489
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: January 19, 1999
    Assignee: Diasense, Inc.
    Inventors: Charles W. Kellstedt, Jr., Joel M. Lieblein, John R. Maliszewski
  • Non-invasive blood sensing device
    Patent number: D411300
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: June 22, 1999
    Assignee: Diasense, Inc.
    Inventors: Charles W. Kellstedt, Jr., Joel M. Lieblein, John R. Maliszewski