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Expired Canadian patentCanada

Liquid detergent composition with mixed enzyme formulation

CA 1208578 A · Owner: Colgate-Palmolive Company · Inventors: Crossin, Michael C.

CIPO record

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Abstract From the Canadian patent

Enzyme-containing liquid detergent compositions are provided comprising 5 to 75% of one or more detergent surface active agents, preferably 10 to 60% of a C2-C3 alkoxylated C10-C18 alkanol nonionic detergent compound; from 25 to 85% water; and an enzyme mixture consisting essentially of an alkaline protease enzyme and an .alpha.-amylase enzyme in relative proportions such that the ratio of the enzyme activities in said mixture is from about 4,000 to about 80,000 Novo amylase units of .alpha.-amylase per Anson unit of protease said, protease being present in an amount to provide from about 0.25 to about 2.5 Anson units per 100 grams of detergent composition the detergent, composition being …

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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

  • Granted July 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 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.
FiledDecember 12, 1983
GrantedJuly 29, 1986
Term endedJuly 29, 2003
Patent numberCA 1208578 A
Classification (IPC)C11D3/38 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedDec 12, 1983Patent grantedJuly 29, 1986Term endedJuly 29, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.