Novel alkaline pullulanase y having .alpha.-amylase activity, microorganism producing the same, and process for producing the same
CA 2024952 C · Owner: Saeki, Katsuhisa · Inventors: Ito, Susumu; Saeki, Katsuhisa; Ara, Katsutoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel alkaline pullulanase Y having .alpha.-amylase activity; a microorganism producing said alkaline pullulanase Y; and a process for producing said alkaline pullulanase Y are disclosed. The alkaline pullulanase Y having .alpha.-amylase activity has its optimum pH at a higher alkaline range than conventional alkaline pullulanases and exhibits excellent stability over a wide pH range. Further the alkaline pullulanase Y has strong resistance to almost all detergent components such as surfactants chelating agents, proteases for detergents and the like. Thus the alkaline pullulanase Y can advantageously be used as a detergent component.
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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 September 10, 1990 and granted May 4, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 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.
Timeline
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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.