Patents by Inventor Charles E. Hoyle

Charles E. Hoyle 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).

  • Thermal development of color in a polyamide textile material with aminobenzenesulfonyl azides
    Patent number: 4415334
    Abstract: The present invention discloses a method of thermally developing color on a polyamide textile material. The material is first contacted with an aminobenzenesulfonyl azide and then is heated at a temperature ranging from 80.degree. C. to the melting point of the polyamide material for an amount of time sufficient to develop a color thereon.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: November 15, 1983
    Assignee: Armstrong World Industries, Inc.
    Inventors: Charles E. Hoyle, Ronald S. Lenox
  • Diazidosulfonyl-N-substituted aniline
    Patent number: 4393006
    Abstract: Novel diazidosulfonyl-N-substituted aniline compounds are disclosed. These compounds are useful in pretreating cellulosic materials to thereby photolytically develop colored images on said materials.
    Type: Grant
    Filed: July 7, 1982
    Date of Patent: July 12, 1983
    Assignee: Armstrong World Industries, Inc.
    Inventors: Charles E. Hoyle, Ronald S. Lenox
  • Development of color in wood with aminobenzenesulfonyl azides
    Patent number: 4322211
    Abstract: The present invention discloses a method of photolytically developing a walnut wood color on a wood sample. The sample is contacted with a salt of an aminobenzenesulfonyl azide. The sample is thereafter exposed to a light source for an amount of time sufficient to produce a walnut wood color thereon.
    Type: Grant
    Filed: May 20, 1981
    Date of Patent: March 30, 1982
    Assignee: Armstrong World Industries, Inc.
    Inventors: Charles E. Hoyle, Ronald S. Lenox