Antitumor antibiotics
CA 1099652 A · Owner: Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai · Inventors: Inui, Taiji; Naganawa, Hiroshi; Umezawa, Hamao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New antitumor agents designated rhodirubin A and B, which are anthracycline glycosides and inhibit the growth of gram-positive bacteria and mammalian tumors are produced, by fermentation of rhodirubin-producing strains of Streptomyces e.g. Streptomyces sp. ME 505-HEI (ATCC 31273).
Read the whole patent
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 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.