Expired Canadian patentCanada
Synthesis of s-3-chloro-1, 2-propanediol
CA 1111866 A · Owner: Tate & Lyle Limited · Inventors: Jones, Haydn F.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The S-enantiomer of 3-chloro-1,2-propanediol is prepared by reaction of a chlorodeoxy-D-saccharide having the partial structure, (I), to cleave the glycol, reduce the aldehyde so formed to an alcohol and hydrolyse the alcohol under mild acidic conditions.
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 November 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1977
GrantedNovember 3, 1981
Term endedNovember 3, 1998
Patent numberCA 1111866 A
Classification (IPC)C07C31/34 +1 more
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.