Patents by Inventor Colin Armstrong

Colin Armstrong 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).

  • Shaped polymeric articles made by two-stage photopolymerization
    Patent number: 4233396
    Abstract: A photocureable article which is of simple shape and is capable of being further shaped is formed by partially polymerizing a composition comprising photopolymerizable liquid in the presence of a photosensitive catalyst and then protecting the article from further irradiation. The article may be fibre-reinforced. The article may be subsequently shaped and further cured to produce a rigid article.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: November 11, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: Colin Armstrong, Derek J. Walbridge
  • Photocurable pigmented coating compositions
    Patent number: 3998979
    Abstract: Pigmented coating compositions cureable in visible light which comprise as film former an unsaturated oil-modified alkyd resin, a polyurethane oil, polybutadiene or allyl ether-containing unsaturated polyester and a photosensitizer of structure ##STR1## wherein A is benzenoid or heterocyclic of benzenoid character.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: December 21, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Colin Armstrong, Peter Francis Nicks, Derek John Walbridge