Patents by Inventor Carl Hultman

Carl Hultman 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).

  • Shaving razors
    Patent number: 5129289
    Abstract: A shaving razor has a blade provided with a sputtered hard coating of the boron carbide and with a fluoropolymer lubricant coating overlying the boron carbide coating and adhering directly thereto. The razor provides good durability and good shave performance.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: July 14, 1992
    Assignee: Warner-Lambert Company
    Inventors: Ross F. Boland, Carl A. Hultman, William E. Vreeland, Peter S. Williams
  • Shaving razors
    Patent number: 5088202
    Abstract: A shaving razor has a blade provided with a sputtered hard coating of the boron carbide and with a fluoropolymer lubricant coating overlying the boron carbide coating and adhering directly thereto. The razor provides good durability and good shave performance.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: February 18, 1992
    Assignee: Warner-Lambert Company
    Inventors: Ross F. Boland, Carl A. Hultman, William E. Vreeland, Peter S. Williams
  • Razor for shaving a face having pseudofolliculitis barbae
    Patent number: 4741103
    Abstract: This invention provides a razor having a knurled guard bar and a single sharp blade particularly adopted for shaving one suffering from pseudofolliculitis barbae.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: May 3, 1988
    Assignee: Warner Lambert Company
    Inventor: Carl A. Hultman
  • Razor cartridge and method of manufacture
    Patent number: 4562645
    Abstract: A plastic cartridge body having an elongated slot for receiving a U-shaped blade having two cutting edges where the blade is fabricated in continuous chain-like fashion, shaped, separated into individual blades, and inserted into the body slot.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: January 7, 1986
    Assignee: Warner-Lambert Company
    Inventors: Anthony L. Dato, Carl A. Hultman