Compositions comprising phenyl-glycine derivatives
CA 2468256 A1 · Owner: Yu, Ruey J. · Inventors: Van Scott, Eugene J.; Yu, Ruey J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to compositions and methods useful for treating a variety of cosmetic conditions and dermatological disorders where the , composition includes a phenyl glycine derivative represented by the following formula: (I); wherein, R1 and R2 are independently H I, F, Cl, Br, OH, SH, NH2, NHNH2 alkyl aralkyl, alkoxy, acetoxy, acyloxy group having 1 to 9 carbon atoms, and being attached at the 2, 3 or 4 position of the phenyl group whereby when R1 and/or R2 are OH, SH, NH2 they may be acetylated or acylated , with 1 to 9 carbon atoms; R3 is H formyl, acetyl, propanoyl, acyl, alkyl aralkyl or an aryl group having 1 to 9 carbon atoms; R4 is OH NH2 NHOH, NHNH2, or OR; where R is …
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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
- Filed November 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2024.
- 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.