Patents by Inventor Corwyn P. Vale

Corwyn P. Vale 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).

  • Process for preparing moldable polyamide polyester compositions
    Patent number: 4145372
    Abstract: A polyester/nylon co-condensate which may be made from the two polymers in an extruder. The co-condensate comprises from 50 to 99% by weight of polyamide having a softening point of from 210.degree. C. to 270.degree. C. and a number average molecular weight in the range 10,000 to 30,000 and from 50% to 1% by weight of a polyester which is selected from saturated and unsaturated polyesters and which has an acid value of from 30 to 90 and a number average molecular weight less than 10,000. The co-condensate can also contain an acrylic homo- or co-polymer as a third component.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: March 20, 1979
    Assignee: British Industrial Plastics, Ltd.
    Inventors: Christopher L. Murray, Corwyn P. Vale