Cancer treating agent
CA 1204664 A · Owner: Chugai Seiyaku Kabushiki Kaisha · Inventors: Shindo, Minoru; Mizuno, Koji; Takanashi, Shigeru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure: A cancer treating agent whose effective ingredient is an anthranyl derivative of the formula: (wherein R1 and R2 may be the same or different and represent a hydrogen atom, a hydroxyl group, a lower alkoxy group preferably C1-C3 alkoxy group, a lower alkyl group preferably, C1-C3 alkyl group, a nitro group or a halogen atom) is disclosed.
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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
- 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.