Alkaline protease
CA 1204687 A · Owner: Wako Pure Chemical Industries Ltd. · Inventors: Masaki, Takeharu; Soejima, Masami; Suzuki, Hideya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel protease is described. The enzyme has the following characteristics: molecular weight: 30,000 (a gel filtration method using Sephadex *G-75); isoelectric point, 5.3; pH reactivity: the optimum pH for its esterase activity is at pH 8.5 and the optimum pH for its amidase activity is at pH 9.0 respectively; substrate reactivity: it selectively and specifically hydrolyzes the ester bond and the amide bond at the carboxyl group of L-lysine; inhibitor: it is inhibited by diisopropyl phosphofluoride, tosyl-L-lysine chloromethyl ketone and phenylmethylsulfonyl chloride. The protease is preferably produced by a microorganism belonging to the genus Achromobacter.
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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 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.