Heat and acid-stable alpha-amylase enzymes and processes for producing the same
CA 1081633 A · Owner: Cpc International Inc. · Inventors: Tamura, Masaki; Kanno, Mutsuo; Ishii, Yoshiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Heat and acid-stable alpha-amylase enzymes having the following characteristics: (1) capable of retaining at least about 70% of their initial activity when held at 90°C and at a pH of 6.0 for 10 minutes in the absence of calcium ion; (2) capable of retaining at least about 50% of their initial activity when held at 90°C at a pH of 6.0 for 60 minutes in the absence of added calcium ion; (3) capable of retaining at least about 50% of their initial activity at a temperature of 80°C and at a pH of 4.55 in the presence of 5mM calcium ion for 10 minutes; and/or (4) capable of retaining at least about 95% of their initial activity at a temperature of 80°C at a pH ranging from about 4 to about 6.5. …
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 July 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1997.
- 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.