Patents by Inventor Kenneth Barrell

Kenneth Barrell 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).

  • Filled thermoplastics
    Patent number: 4562215
    Abstract: A filled thermoplastics composition with a filler of particle size below 1 micron in an amount greater than 25 percent by weight also comprises a second filler whose particle size is different from the first but is below 2 microns.The mouldability of the composition is substantially improved by the presence of the second filler.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: December 31, 1985
    Assignee: BIP Chemicals Limited
    Inventors: Moira A. Carter, Kenneth Barrell