Patents by Inventor Reginald W. Stephenson

Reginald W. Stephenson 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).

  • Patent number: 4376218
    Abstract: A solid organic peroxide composition comprises from 50% to below 70% by weight of a solid organic peroxide, such as benzoyl peroxide, at least 10% preferably at least 15% of a liquid desensitizer such as a liquid ester of phthalic acid, benzoic acid or phosphoric acid, a silicone oil or a liquid chlorinated hydrocarbon and a solid organophilic compound such as a solid ester of phthalic acid, benzoic acid or phosphoric acid a solid chlorinated hydrocarbon or a salt of a higher fatty acid in, preferably, less than 20% by weight. The compositions are particularly insensitive to impact.
    Type: Grant
    Filed: April 14, 1981
    Date of Patent: March 8, 1983
    Assignee: Interox Chemicals Limited
    Inventors: Keith J. Izzard, Reginald W. Stephenson, Keith C. P. Stanistreet, Iain R. Keeling