Patents by Inventor Arnold George Cottrell

Arnold George Cottrell 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).

  • Surface treatment of particulate solids
    Patent number: 3963627
    Abstract: A fire-fighting foam-compatible powder containing a fire-extinguishing powder and from 0.1% to 5% of a partially-hydrophobic powdered silica, having a surface area of at least 10 square meters per gram, and carrying a surface treatment with a silane, wherein the degree of hydrophobicity measured by the methanol titration test is in the range of 3 to 35.
    Type: Grant
    Filed: June 11, 1974
    Date of Patent: June 15, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventor: Arnold George Cottrell
  • Solid fire-extinguishing compositions
    Patent number: 3947365
    Abstract: A solid fire-extinguishing composition comprisingA. carbamic powder containing a major proportion by weight of the compound KC.sub.2 N.sub.2 H.sub.3 O.sub.3 andB. a non-hygroscopic powder having greater bulk density and median particle size than the said carbamic powder.
    Type: Grant
    Filed: September 14, 1973
    Date of Patent: March 30, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Arnold George Cottrell, John Malloy Paton