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Expired Canadian patentCanada

Antibiotic oxanosine and a process for the production thereof

CA 1165710 A · Owner: Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai · Inventors: Umezawa, Hamao; Shimada, Nobuyoshi; Hamada, Masa

CIPO record

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Abstract From the Canadian patent

The novel antibiotic oxanosine, having the structure, inhibits the growth of Gram-negative bacteria and has antiviral and carcinostatic activity. It is produced by cultivation of an oxanosine-producing microorganism of the genus Streptomyces preferably Streptomyces capreolus MC265-CP3 ATCC No. 31963.

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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 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 18, 1981
GrantedApril 17, 1984
Term endedApril 17, 2001
Patent numberCA 1165710 A
Classification (IPC)C07H19/24 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedNov 18, 1981Patent grantedApril 17, 1984Term endedApril 17, 2001

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