Patents by Inventor Norman G. Sanborn

Norman G. Sanborn 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).

  • Aqueous correction fluids
    Patent number: 6331579
    Abstract: Correction fluids are provided which include a cationic stain blocking agent, an opacifying pigment and water. Preferred opacifying pigments include an alumina treated titanium dioxide and a clay. The new correction fluids have improved bleed resistance and hiding power.
    Type: Grant
    Filed: October 21, 1996
    Date of Patent: December 18, 2001
    Assignee: The Gillette Company
    Inventor: Norman G. Sanborn
  • Aqueous correction fluids
    Patent number: 5925693
    Abstract: Correction fluids are provided which include a cationic stain blocking agent, an opacifying pigment and water. Preferred opacifying pigments include an alumina treated titanium dioxide and a clay. The new correction fluids have improved bleed resistance and hiding power.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: July 20, 1999
    Assignee: The Gillette Company
    Inventor: Norman G. Sanborn
  • Correction fluid
    Patent number: 5922400
    Abstract: An aqueous correction fluid is provided including an opacifying agent, including a first opacifying pigment selected to provide hiding power and a second opacifying pigment selected to provide suspension redispersability, a cationic film-forming polymer, a nonionic film-forming polymer, and a dispersing agent.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: July 13, 1999
    Assignee: The Gillette Company
    Inventors: Chiou C. Yau, Kim H. Ng, Norman G. Sanborn
  • Correction fluid for water-fast inks
    Patent number: 5872162
    Abstract: Correction fluids are provided which include an opacifying pigment, a water-fast ink fixing agent including a cationic non-film-forming polymer, a binder including a film-forming polymer compatible with the ink fixing agent, and water. The new correction fluids have improved "bleed" resistance when used to correct water-fast inks, such as ball-point pen inks.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: February 16, 1999
    Assignee: The Gillette Company
    Inventors: Brian K. McHugh, Norman G. Sanborn
  • Aqueous correction fluid
    Patent number: 5332599
    Abstract: An aqueous correction fluid is provided which includes a latex binder, an opacifying pigment, a protective colloid, a nonionic surfactant, an anionic dispersant, and water. Preferably, the polymer binder is provided in the form of an aqueous emulsion. The correction fluid has improved freeze-thaw stability.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: July 26, 1994
    Assignee: The Gillette Company
    Inventor: Norman G. Sanborn
  • Correction fluid containing a butyl methacrylate copolymer ditridecyl phthalate, a non-halogenated solvent and an opacifying agent
    Patent number: 5306755
    Abstract: An ozone-friendly correction fluid includes a non-halogenated solvent, a butyl methacrylate copolymer as the polymeric film-forming material, a plasticizer, and an opacifying agent.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: April 26, 1994
    Assignee: The Gillette Company
    Inventors: Chiou C. Yau, Norman G. Sanborn, Kim H. Ng, Thomas G. Decker, Deborah A. Mayer, Vliet M. Hulse, John Thompson
  • Ozone-friendly correction fluid
    Patent number: 5199976
    Abstract: An ozone-friendly correction fluid includes a non-halogenated solvent, a vinyl toluene-butadiene copolymer as the polymeric film-forming material, a dispersing agent, and an opacifying agent.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: April 6, 1993
    Assignee: The Gillette Company
    Inventors: Chiou C. Yau, Norman G. Sanborn, Kim H. Ng