Patents by Inventor Edward J. Ferguson

Edward J. Ferguson 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).

  • Correction fluid compositions
    Patent number: 5256191
    Abstract: Substantially non-toxic correction fluid compositions including an opacifying pigment dispersed in a solution of a solvent, a siloxane and a film-forming polymeric material.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: October 26, 1993
    Inventors: John Thompson, Kim H. Ng, Edward J. Ferguson
  • Pressurized cartridge for a writing instrument
    Patent number: 4498797
    Abstract: A writing instrument cartridge contains a loose fitting ball follower disposed within the cartridge between an end of a column of paste like ink exhibiting a yield value, and compressed gas contained in a sealed end of the cartridge. The ball follower is adapted to help peel the ink from the tube walls without contact and to prevent the gas from channeling through the ink and escaping from the cartridge past a ball point or nib during writing.
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: February 12, 1985
    Assignee: The Gillette Company
    Inventors: Henry Peper, Thomas E. Eaton, Edward J. Ferguson
  • Erasable inks containing thermoplastic block copolymers
    Patent number: 4390646
    Abstract: An erasable ink containing a thermoplastic block copolymer, pigment particles, and a solvent. In a preferred embodiment, an erasable ink requiring little or no pressurization is provided by employing a mixture of radial and linear block copolymers and a mixed solvent system falling within a specific range of solubility parameter. Polybutene and poly-alpha-methylstyrene are preferred additives to decrease smearing tendency.
    Type: Grant
    Filed: November 5, 1981
    Date of Patent: June 28, 1983
    Assignee: The Gillette Company
    Inventor: Edward J. Ferguson