Patents by Inventor Brian A. J. Booker

Brian A. J. Booker 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).

  • Refill unit for a writing instrument
    Patent number: 5417504
    Abstract: A refill unit (1) for a writing instrument has a writing tip (5) at one end and a ratchet mechanism (7) at the other end through the use of which the unit (1) can be turned and selectively extended from and retracted into the writing instrument. The ratchet mechanism (7) is rotatable about the longitudinal axis of the unit with respect to the writing tip (5). Each time the refill unit (1) is extended from or retracted into the writing instrument, the tip (5) rotates by a substantially random amount which ensures a more even distribution of wear on the writing tip (5).
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: May 23, 1995
    Assignee: Parker Pen (I.P.) Limited
    Inventors: Neville E. Andrews, Brian A. J. Booker
  • Pocket clip for a writing instrument
    Patent number: 4506426
    Abstract: A pocket clip is attached to the tubular barrel of a writing instrument and the rear open end of the barrel is closed by pressing a pocket clip part over the rear end of the barrel and pressing an integral plug portion of the pocket clip part into the opening at the rear end of the barrel.
    Type: Grant
    Filed: August 30, 1983
    Date of Patent: March 26, 1985
    Assignee: The Parker Pen Company
    Inventor: Brian A. J. Booker
  • Fountain pen
    Patent number: D280422
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: September 3, 1985
    Assignee: The Parker Pen Company
    Inventors: Brian A. J. Booker, Thomas W. Hillebrand
  • Ball point pen
    Patent number: D284872
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: July 29, 1986
    Assignee: The Parker Pen Company
    Inventor: Brian A. J. Booker
  • Push button ball point pen
    Patent number: D285936
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: September 30, 1986
    Assignee: The Parker Pen Company
    Inventors: Brian A. J. Booker, Harley A. Jung, Clemens A. Sonntag
  • Push button mechanical pencil
    Patent number: D285937
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: September 30, 1986
    Assignee: The Parker Pen Company
    Inventors: Brian A. J. Booker, Harley A. Jung, Clemens A. Sonntag
  • Fountain pen
    Patent number: D286791
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: November 18, 1986
    Assignee: The Parker Pen Company
    Inventor: Brian A. J. Booker
  • Writing instrument
    Patent number: D330217
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: October 13, 1992
    Assignee: Parker Pen (Benelux) B.V.
    Inventor: Brian A. J. Booker