Percutaneous-administration-type pharmaceutical preparation of nitroglycerin
CA 1304296 C · Owner: Takahashi, Katsuhiko · Inventors: Takahashi, Katsuhiko; Uenoyama, Satoshi; Nakagawa, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A percutaneos-administration-type pharmaceutical preparation of nitroglycerin comprising a backing that is impervious to medicines and a, pressure-sensitive adhesive layer that is disposed on one surface of the backing, wherein the pressuresensitive adhesive layer contains alkyl (meth)acrylate copolymer in the concentration of 80-95% by weight and the nitroglycerin in the contains as major copolymer weight, said copolymer contains as major copolymer components alkyl (meth)acrylate with alkyl groups having 6 or more carbon atoms, which alkyl (meth)acrylates include 2-ethylhexylmethacrylate in the concentration of 40-90% by weight based on the total weight of said alkyl (meth)acrylates, and …
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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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
- 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.