Spergualin-related compounds and process for producing the same
CA 1305827 C · Owner: Takeuchi, Tomio · Inventors: Takeuchi, Tomio; Nakamura, Teruya; Takahashi, Katsutoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel Spergualinrelated compounds represented by the general formula I (I), (wherein X is -(CH2)3-5- or , R is -H or -CH2OH; R1 is -H, or (CH3) 2CHCH2-, -: R2 is a residue obtained by removing, from an amino acid or peptide, the hydroxyl group of the carboxyl group and when R1 is a group other than -H, R2 is same as R1) or a, pharmacologically acceptable salt thereof. Said compounds or salts thereof have an immuno-modulating action.
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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 July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 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.