Patents by Inventor Donald Simmonite

Donald Simmonite 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).

  • Treatment of particulate carbon
    Patent number: 4076892
    Abstract: Particulate porous absorptive material such as carbon is coated with a biocompatible polymer to give a thin (e.g. 1-10 micron) smooth permeable coating without plugging the pores. The resulting material is free from fines and surface debris and useful for haemoperfusion. Coating is best effected by spraying hot washed carbon granules, free from fines and in rapid movement with a solution of polymer (e.g. polyHEMA) so as to bring about rapid evaporation and a coating weight preferably of up to 20% usually 0.25% to 5%.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: February 28, 1978
    Assignee: T. J. Smith & Nephew Limited
    Inventors: Jack Fennimore, Gary Ruder, Donald Simmonite