1- 5-(substituted phenyl)-2-oxazolyl -methylene - amino -2,4-imidazolidinediones
CA 1084510 A · Owner: Morton Norwich Products, Inc. · Inventors: White, Ralph L. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a process for the preparation of a compound of the formula (I), and pharmaceutically acceptable salts thereof wherein X represents hydrogen 4-halogen, 3,4-dichloro, 4-nitro, 4-methoxy 4-methyl, or 3 trifluoromethyl, which comprises cyclizing a compound of the formula where X is as defined above; and where required converting the so produced compound to a pharmaceutically acceptable salt thereof. The compounds of formula (I) as defined above are useful as muscle relaxants.
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 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 1997.
- 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.