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Expired Canadian patentCanada

Refined detoxified endotoxin product

CA 1185899 A · Owner: Ribi Immunochem Research, Inc. · Inventors: Ribi, Edgar E.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A refined detoxified endotoxin (RDE) product is disclosed which, when combined with cell wall skeleton (CWS) results in a composition useful for the treatment of cancerous tumors. Methods of making RDE as well as methods of using the combination of RDE and CWS are also disclosed.

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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 April 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 24, 1983
GrantedApril 23, 1985
Term endedApril 23, 2002
Patent numberCA 1185899 A
Classification (IPC)A61K39/02 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 24, 1983Patent grantedApril 23, 1985Term endedApril 23, 2002

Sources & verification

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