Expired Canadian patentCanada
Novel thermoduric and aciduric pullulanese enzyme and method for its production
CA 2019756 C · Owner: Tomimura, Eijiro · Inventors: Tomimura, Eijiro
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoduric and aciduric pullulanase enzyme and a, process for its preparation from a new microorganism designated as Bacillus naganoensis. The pullulanase is useful for the production of dextrose and high-maltose syrups from starch hydrolyzates.
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
- Filed June 25, 1990 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 25, 1990
GrantedMarch 2, 1999
Term endedJune 25, 2010
Patent numberCA 2019756 C
Classification (IPC)C12N9/44 +2 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.