Ointment base
CA 1249968 A · Owner: Takeda Pharmaceutical Company Limited · Inventors: Tanaka, Makoto; Hayashida, Shigeru; Kigasawa, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ointment base for external use is provided which contains a water-soluble protein and monohydric alcohol or/and oleaginous substance and additionally contains a wetting agent. The present ointment base offers a markedly improved percutaneous absorption of drugs, as compared with the conventional ointment bases.
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 February 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2006.
- 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.