Polyhydroxybenzoic acid derivatives
CA 1339221 C · Owner: Wampler, Galen L. · Inventors: Wampler, Galen L.; Elford, Howard L.; Van'T Riet, Bartholomeus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides polyhydroxy-substituted benzphenylacet- and mandelamidines, amidates amidoximes and hydroxy-, amidoximes-ribonucleotide reductase inhibitors and free radical scavengers, of the general formula (I), wherein n is 2-5, m is 0 or 1, R' is NOH or NH R is NH2 or NHOH when, R' is NOH, R is NH2 or O-C1-3 alkyl when R'is NH and R" is H or OH; and, pharmaceutically acceptable acid addition salts thereof. These compounds are useful in the treatment of disease conditions involving excess free radical formation in the body, or in the treatment of certain neoplasms.
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 August 5, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2014.
- 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.