Glycerol derivatives, their production and use
CA 1298833 C · Owner: Nomura, Hiroaki · Inventors: Inoue, Keizo; Okutani, Tetsuya; Nomura, Hiroaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula:, wherein R1 is a higher alkyl group which may be substituted; R2 is hydrogen, a lower alkyl group which may be substituted, a lower alkanoyl group which may be substituted or a lower alkylthiocarbamoyl group; R3 is a primary to tertiary amino group or a quaternary ammonium group; and n is 2 or 3 and salts, thereof, have antitumor activity and platelet activating factor inhibitory activity.
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
- Granted April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 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.