Synthetic bone ash

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4274879
SERIAL NO

06156052

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
TATE & LYLE LIMITEDSUGAR QUAY LOWER THAMES ST LONDON EC3R 6DQ

International Classification(s)

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  • 1980 Application Filing Year
  • C01B Class
  • 406 Applications Filed
  • 1 Patents Issued To-Date
  • 0.25 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances19801981198219830255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Irvine, George D Greenock, GB6 1 21

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Patent Citation Ranking

  • 21 Citation Count
  • C01B Class
  • 0 % this patent is cited more than
  • 44 Age
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