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Expired Canadian patentCanada

Tumor antigen and process for the preparation thereof

CA 1077840 A · Owner: Max-Planck-Gesellschaft Zur Foerderung Der Wissenschaften E.V. · Inventors: Modolell, Manuel; Munder, Paul G.

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Abstract From the Canadian patent

Abstract of the disclosure:, The present invention relates to tumor antigens which can be obtained from tumor cells by treating tumor cells with a short chain synthetic lysolecithin analog separating the, cell residue and recovering the supernatant; the invention relates furthermore to immunotherapeutic medicaments against tumor affections which consist of or contain the tumor antigens obtained according to the above process.

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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 May 20, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 20, 1980
Term endedMay 20, 1997
Patent numberCA 1077840 A
Classification (IPC)A61K39/00 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMay 20, 1980Term endedMay 20, 1997

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