Spergualin-related compound and use thereof
CA 2047341 A1 · Owner: Saino, Tetsushi · Inventors: Umeda, Yoshihisa; Mae, Takako; Tomiyoshi, Tsugio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel spergualin-related compounds represented by the general formula (I):, (I), wherein X represents -(CH2)1-5- or a phenylene group which may be substituted; m represents 0 1 or 2; n, represents 1 or 2; and R1 represents -(CH2)1-3-COOH and, pharmacologically acceptable salts thereof possess an, immunopotentiating activity and are expected to be, useful as immunopotetiators applicable to warm blooded animals.
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 July 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2013.
- 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.