Patents by Inventor Kenneth McGregor

Kenneth McGregor 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).

  • Modified urea formaldehyde resin fiber paper
    Patent number: 4268351
    Abstract: A wet laid paper in which at least 1% by weight of the fibrous constituents are UF fibres made from an inorganic oxyacid radical modified UF resin. The inorganic oxyacid radicals are sulphite, phosphate, phosphite, or borate radicals and are present in such an amount that the UF fibres contain 0.2-15 inorganic oxyacid radicals per 100 methylene units. The modified resin is made by reacting urea with formaldehyde in the presence of a source of the oxyacid radicals.
    Type: Grant
    Filed: August 31, 1979
    Date of Patent: May 19, 1981
    Inventors: Richard G. C. Henbest, Kenneth McGregor
  • Sulfite-modified fibrous resinous material
    Patent number: 4202959
    Abstract: The present invention provides fibres of urea formaldehyde, melamine formaldehyde, phenol formaldehyde, and mixtures thereof, modified by inorganic oxyacid radicals derived from inorganic oxyacids of sulphur, salts of such inorganic oxyacids, phosphate radicals, phosphite radicals, borate radicals and mixtures thereof.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: May 13, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: Richard G. C. Henbest, Kenneth McGregor