Patents by Inventor Trevor R. Osborne

Trevor R. Osborne 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).

  • Thickened moulding compositions
    Patent number: 4895895
    Abstract: A thickened moulding composition comprises fibrous reinforcement, an ethylenically unsaturated polymer, a monomer copolymerizable therewith and a crystalline unsaturated polyester having a glycol component derived from at least two symmetrical glycols.Preferably, the crysatlline polyester has a molecular weight per double bond of no more than about 210 and a melting point of from 50.degree.-115.degree. C.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: January 23, 1990
    Assignee: Scott Bader Company Limited
    Inventors: Trevor R. Osborne, Stephen J. Thompson
  • Moulding compositions
    Patent number: 4439559
    Abstract: A polyester moulding composition for providing a moulded article less susceptible to cracking than those made from conventional polyester moulding compositions contains an unsaturated polyester resin, 25-55 mole % of the acid of which is a symmetrical aromatic saturated dicarboxylic acid and the glycol of which is preferably 1,6 - hexanediol, a monomer which is a solid or liquid of low volatility, at least one inorganic filler and reinforcing fibres. The filler preferably has a mean particle size of below 5.mu. or from 15 to 130.mu. inclusive.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: March 27, 1984
    Assignee: Scott Bader Company Limited
    Inventor: Trevor R. Osborne