Glycosidation catalyst and process for preparing glycoside derivatives
CA 1291983 C · Owner: Takata, Yasushi · Inventors: Kinomura, Keisuke; Kitazawa, Sadaya; Takata, Yasushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
OF DISCLOSURE:, Disclosed are a glycosidation catalyst comprising at least one of heteropoly acids represented by the formula, HaXpMqOr ? bH2O, wherein X is P As, Si or Ge, M is at least one species selected from the group consisting of Mo W and V, a is 3, 4 or 6, b is an integer of 0 to 30 p is 1 or 2, q is 12, or 18, and r is 40 or 62 with the proviso that when X is, P or As a is 3 or 6; when X is Si or Ge, a is 4; and further (1) when X is P or As and a is 3 or when X is Si, or Ge and a is 4, M is at least one species selected from the group consisting of Mo, W and V, p is 1 q is 12 and r, is 40; and (2) when X is P or As and a is 6 M is Mo or W, p is 2, q is 18 and r is 62 and a process …
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, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- 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.