Penicillin derivatives and process for preparation of the same
CA 1201433 A · Owner: Taiho Pharmaceutical Co. Ltd. · Inventors: Micetich, Ronald G.; Yamabe, Shigeru; Hirata, Shoji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PENICILLIN DERIVATIVES AND PROCESS, FOR PREPARATION OF THE SAME ABSTRACT:, This invention provides a penicillin derivative of the formula and a salt thereof (I), wherein X represents chlorine atom or bromine atom and R represents hydrogen atom or penicillin carboxyprotecting radical, and a process for preparing the derivative of the formula (I) and a salt thereof by reacting a compound of the formula, wherein R is as defined above with a chlorinating reagent or brominating reagent and, when required forming a salt, thereof.
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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 March 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 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.