Analgesic and anti-inflammatory patch
CA 2528649 C · Owner: Konishi, Tatsuya · Inventors: Machida, Yuji; Abe, Yasuko; Konishi, Tatsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anti-inflammatory analgesic adhesive patch which has an excellent anti-inflammatory analgesic effect and is reduced in unpleasant irritant feeling during wear. It is characterized by containing, as active ingredients benzocaine and an ingredient having a counter-irritation effect, wherein the ingredient having a counter-irritation effect comprises one or more members selected from the group consisting of 1-menthol, dl-menthol, dl-camphor d-camphor, methyl salicylate, glycol salicylate peppermint oil, eucalyptus oil, capsaicin capsicum extract, and nonylic , acid vanillamide and the benzocaine is contained in an amount of 0.5 to 20 wt.%.
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 10, 2004 and granted May 21, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2026.
- 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.