Method for the preparation of fructose-containing oligosaccharide
CA 2040877 C · Owner: Kitahata, Sumio · Inventors: Kitahata, Sumio; Fujita, Koki; Hara, Kozo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An enzymatic method is proposed for the preparation of a fructose-containing oligosaccharide, in which a .beta.-fructofuranosidase obtained by culturing Arthrobacter sp. K-1 (FERM BP-3192) as an enzyme is reacted on sucrose raffinose or stachyose, as the donor in the presence cf an aldose or ketose as the receptor. The enzyme is characterized by: (1) activity on sucrose for the transglycosidation of a fructosyl group to the receptor in the presence of a monosaccharide sugar, alcohol, alkyl alcohol, glycoside or oligosaccharide; (2) activity for the decomposition of sucrose elrose, neokestose, xylsucrose, raf~inose and stachyose with inactivity on a saccharide selected from the group …
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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
- Filed April 19, 1991 and granted March 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 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.