Patents by Inventor Antony R. Perry

Antony R. Perry 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).

  • Photopolymerizable composition comprising .alpha.,.alpha.diketone catalyst
    Patent number: 4235686
    Abstract: A polymeric composition which is capable of being shaped and which preferably is in the form of a sheet, the composition being formed by partially reacting a mixture of(a) the precursors of a polyurethane comprising at least one polyfunctional compound capable of reacting with isocyanate groups and at least one polyisocyanate, and,(b) the precursors of a cured polyester resin comprising at least one ethylenically unsaturated polyester and at least one ethylenically unsaturated monomer copolymerizable therewith,and the composition containing at least one alpha, alpha diketone as a photosensitive catalyst.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: November 25, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: Edward C. Dart, Roger C. Roberts, Antony R. Perry, Jozef Nemcek, Neil B. Graham