Patents by Inventor Keith Pyrah

Keith Pyrah 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).

  • Destructurized starch and method for making same
    Patent number: 5382611
    Abstract: A destructurized native starch material is described which has a water content in the range of about 10 to 25% by weight and that its mass average molar mass is reduced by a factor of 2 to 5000 compared to its original mass average molar mass. The destructurized starch is produced by heating a chemically non-modified starch material having a water content in the range of about 5 to 25% by weight of the total weight of the composition in the presence of a chain scission catalyst in a closed volume to an elevated temperature sufficient to form a thermoplastic melt and until the mass average molar mass is reduced by a factor of 2 to 5000.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: January 17, 1995
    Assignee: Warner-Lambert Company
    Inventors: Robert F. T. Stepto, Ivan Tomka, Beat Dobler, Keith Pyrah