Immunosuppressive-activity potentiating compositions
CA 2195371 A1 · Owner: Udaka, Tetsunobu · Inventors: Shimizu, Nobuyoshi; Yoshida, Ken-Ichi; Aoe, Motoi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the present invention, there are provided immunosuppressive-activity potentiating compositions which comprise a phosphoric acid diester compound represented by the following formula I:, (see fig. I), I, (R1 and R3 are the same or different and represent individually a hydrogen atom or methyl group) or its pharmacologically acceptable salt, and the immunosuppressive-activity potentiating compositions can suppress effectively acute rejection after transplanation.
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 January 17, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 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.
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.