Patents by Inventor John H. Cameron

John H. Cameron 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).

  • Imprinting felt and method of using the same
    Patent number: 5591305
    Abstract: The felt disclosed is a base fabric which is covered with a low level of batting and which is treated with a polymer. A papermaking machine and method of using the machine which employs a felt that simultaneously imprints and dewaters a wet paper web as the web is deposited on a cylindrical drying surface.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: January 7, 1997
    Assignee: The James River Corporation of Virginia
    Inventor: John H. Cameron
  • Imprinting felt and method of using the same
    Patent number: 5569358
    Abstract: The felt disclosed is a base fabric which is covered with a low level of batting and which is treated with a polymer. A papermaking machine and method of using the machine which employs a felt that simultaneously imprints and dewaters a wet paper web as the web is deposited on a cylindrical drying surface.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: October 29, 1996
    Assignee: James River Corporation of Virginia
    Inventor: John H. Cameron
  • Method of manufacturing improved mineral board
    Patent number: 4297311
    Abstract: A method of producing an improved mineral board and the resulting product are disclosed. According to the present invention, the board is predominantly composed of perlite and a binder therefor, preferably urea-formaldehyde resin. The perlite is crushed after the composition is in its final shape but before the binder is set whereby its strength is substantially increased. The composition and process of making the board substantially reduce energy costs as compared to known methods for making wet-process mineral boards. The product composition may include up to 95% perlite by weight.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: October 27, 1981
    Assignee: Conwed Corporation
    Inventors: Norman Sherman, John H. Cameron