Patents by Inventor Donald I. Craft

Donald I. Craft 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 of making a high melt viscosity block copolyester
    Patent number: 4593077
    Abstract: A novel process is disclosed for preparing a high melt viscosity block co-polyester of at least two different linear polyesters. The process comprises melt blending the polyesters and, thereafter, subjecting the melt blended polyesters to a temperature of 10.degree.-50.degree. C. below the melting point of the lowest melting ingredient in the blend until the melt viscosity has increased to at least 10,000 poises at a temperature 10.degree.-15.degree. C. above the melting point of the blend.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: June 3, 1986
    Assignee: General Electric Company
    Inventors: Willem F. H. Borman, Donald I. Craft, Morton Kramer
  • Foamable polyester composition
    Patent number: 4288561
    Abstract: A foamable thermoplastic injection moldable composition comprising in admixture (a) a polyester resin, (b) a filler selected from the group consisting of fibrous glass or a mineral or mixtures thereof in an amount of from about 5 to about 50 weight percent and (c) a minor amount of a foaming agent. The compositions can also include flame retardant additives.
    Type: Grant
    Filed: February 22, 1978
    Date of Patent: September 8, 1981
    Assignee: General Electric Company
    Inventors: Donald I. Craft, Morton Kramer
  • Light stabilized polyester resin composition
    Patent number: 3950301
    Abstract: Ultraviolet light stable polyester resin compositions are provided by this invention. These compositions include as the stabilizer system, a stabilizing amount of a hydroxybenzotriazole ultraviolet light absorber.
    Type: Grant
    Filed: August 1, 1974
    Date of Patent: April 13, 1976
    Assignee: General Electric Company
    Inventors: Karl J. Balog, Donald I. Craft