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Expired Canadian patentCanada

Coenzyme a - synthesizing protein complex of bakers' yeast

CA 1112194 A · Owner: Research Corporation · Inventors: Bucovaz, Edsel T.; Morrison, William C.; Morrison, John C.

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Abstract From the Canadian patent

A specific type of protein which has been designated, B-protein (Bucovaz-protein) is present in most serum of, individuals with cancer. The B-protein interacts with a low molecular weight protein component, which is released by the coenzyme A-synthesizing protein complex (CoA-SPC) of Bakers' yeast during the course of CoA synthesis. This low molecular weight protein, for purposes of identification is referred to, as binding protein. The binding protein has a molecular weight of 10,000 to 15,000. Interaction of radioactively labeled binding protein of CoA-SPC with the B-protein of serum provides a marker for the detection of cancer. Of 3005 serums assayed, which included 908 patients …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 10, 1980
GrantedNovember 10, 1981
Term endedNovember 10, 1998
Patent numberCA 1112194 A
Classification (IPC)C12N1/18

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedDec 10, 1980Patent grantedNov 10, 1981Term endedNov 10, 1998

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.