Sucrose derivative
CA 1213887 A · Owner: Tate & Lyle Public Limited Company · Inventors: Khan, Riaz A.; Patel, Gita D.; Mufti, Khisar S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the general formula: I, (in which X represents a hydrogen atom or an alkoxy or arylalkoxy group) are new compounds; those where X represents a hydrogen atom or a methoxy group are potent sweeteners while those with a cleavable 6-ether grup are key intermediates in the preparation of 4,1',6'-trichloro- 4,1'6'-trideoxygalactosucrose (TGS). They are prepared by chlorinating a sucrose 6-ether by, etherifying a suitably protected derivative of TGS or in the case where X represents hydrogen by, debromination of, 6-bromo-4,1',6'-trichloro-4,6,1',6'-tetradeoxyqalactosucrose.
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 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2003.
- 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.