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Expired Canadian patentCanada

Dust-free particulate enzyme formulation

CA 1267622 C · Owner: Solvay Enzymes, Inc. · Inventors: Good, Ivan Carl; Jao, Yun C.

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Disclosed is a method for the production of dust free, enzyme containing particles. The method involves coating a hydratable core particle with the enzyme in a fluidized bed reactor and then applying an overcoating of a film-forming macro-molecular material to the enzyme coated core. MS-1379

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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 April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 17, 1986
GrantedApril 10, 1990
Term endedApril 10, 2007
Patent numberCA 1267622 C
Classification (IPC)C11D3/38 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedFeb 17, 1986Patent grantedApril 10, 1990Term endedApril 10, 2007

Sources & verification

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