Patents by Inventor George D. Irvine

George D. Irvine 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).

  • Synthetic bone ash
    Patent number: 4274879
    Abstract: Hydroxyapatite suitable for incorporation as a synthetic bone ash in a "bone" china body is produced by continuously contacting a stream of a slurry of hydrated lime with a stream of at least about 60% by weight phosphoric acid at an approximately stoichiometric ratio of 10 Ca(OH).sub.2 to 6 H.sub.3 PO.sub.4 and a temperature of from about 80.degree. to about 85.degree. C. at a controlled reaction mixture of pH of from about 9.0 to about 11.0 and then calcining at a temperature of at least 1,000.degree. C.
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: June 23, 1981
    Assignee: Tate & Lyle Limited
    Inventor: George D. Irvine