Patents by Inventor Henry C. Oat

Henry C. Oat 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).

  • Method of stone washing fabric with a synthetic abrasive stone
    Patent number: 5359745
    Abstract: Synthetic abrasive stones and method for making same. A mixture of glass and 10-20% by weight foaming agent is provided. The mixture is heated to a temperature of from 788.degree. to 899.degree. C., and is then cooled to room temperature.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: November 1, 1994
    Inventor: Henry C. Oat
  • Synthetic abrasive stones and method for making same
    Patent number: 5326382
    Abstract: Synthetic abrasive stones and method for making same. A mixture of glass and 10.5-28% by weight foaming agent is provided. The mixture is heated to a temperature of from 765.degree. to 960.degree. C., and is then cooled to room temperature.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: July 5, 1994
    Inventor: Henry C. Oat
  • Synthetic abrasive stones and method for making same
    Patent number: 5266087
    Abstract: Synthetic abrasive stones and method for making same. A mixture of glass and 10-20% by weight foaming agent is provided. The mixture is heated to a temperature of from 788.degree. to 899.degree. C., and is then cooled to room temperature.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: November 30, 1993
    Inventor: Henry C. Oat
  • Method of coloring cement
    Patent number: 4962006
    Abstract: A method of coloring cement containing products includes applying a metal sulfate to the surface of the product in the presence of water.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: October 9, 1990
    Assignee: Color-Crete
    Inventor: Henry C. Oat
  • Method of stone washing fabric with a synthetic abrasive stone
    Patent number: RE35634
    Abstract: Synthetic abrasive stones and method for making same. A mixture of glass and 10-20% by weight foaming agent is provided. The mixture is heated to a temperature of from 788.degree. to 899.degree. C., and is then cooled to room temperature.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: October 21, 1997
    Inventor: Henry C. Oat