Canadian application, no grantCanada
Acne treatment
CA 2250383 A1 · Owner: Staton, John Alexander · Inventors: Rowe, James Steven; Staton, John Alexander
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for topical treatment of acne said composition comprising 0.5-, 20 % w/w of NAD NADP or a precursor which generates NAD or NADP in use 0.1-, 25 % w/w tea tree oil and a pharmaceutically acceptable carrier.
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 March 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 24, 1997
GrantedNo grant recorded
Term endedMarch 24, 2017
Patent numberCA 2250383 A1
Classification (IPC)A61K31/45 +2 more
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.