Topical patch preparation containing a delayed-type hypersensitivity inducer and methods for using the same
CA 2440209 A1 · Owner: Teikoku Pharma Usa, Inc. · Inventors: Mori, Ichiro; Shudo, Jutaro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Topical patch preparations that contain a delayed-type hypersensitivity inducer, e.g. 1-dichloro-2,4-dinitrobenzene (DNCB) and methods for using the , same are provided. The subject topical patch preparations are made up of an adhesive gel composition that is present on a support where the adhesive gel , composition includes the delayed-type hypersensitivity inducer a water-, soluble polymer gel, water and a water holding agent. In using the subject topical patch preparations, the topical patch preparations are applied to a skin surface of a subject and maintained at the site of application for a period of time sufficient for an effective amount of the delayed-type hypersensitivity …
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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
- Filed February 22, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 2024.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.