Stable aspirin-containing preparations for external use
CA 2264022 A1 · Owner: Mizobuchi, Noriko · Inventors: Hisaichi, Shin-Ichi; Hasegawa, Yuichi; Kawada, Mitsuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aspirin-containing preparations for external use having a long-lasting stability of aspirin and a high percutaneous absorbability thereof and being characterized by containing at least one component selected from among esters of organic C2-20 acids, glycerol/fatty acid esters silicone oils, hydrocarbon , oils and crotamiton.
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
- Filed June 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2020.
- 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.