Vehicle compositions containing 1-n-dodecylazacycloheptan-2-one
CA 1076028 A · Owner: Nelson Research And Development Company · Inventors: Rajadhyaksha, Vithal J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to compositions for carrying physiologically active agents through body membranes. Many physiologically active agents are best applied topically to obtain desirable results. The greatest problem in applying physiologically active agents topically is that the skin is such an effective barrier to penetration. Vehicles such as USP cold cream, ethanol and various ointments, oils solvents, and emulsions have been, used heretofore to apply physiologically active ingredients locally. Most such vehicles are not effective to carry significant amounts of physiologically active agents through the skin. The present invention relates to compositions useful in topically …
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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
- Granted April 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 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.