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Expired Canadian patentCanada

Synergistic antimicrobial or biocidal mixtures

CA 1269926 C · Owner: Rossmoore, Harold W. · Inventors: Rossmoore, Harold W.

CIPO record

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

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Abstract From the Canadian patent

Synergistic anti-microbial compositions containing a mixture of a metal complex of a polyfunctional organic ligand and a biocidal composition which contains or releases a lower aldehyde containing 1 to 5 carbon atoms are described. The compositions are particularly useful as metal working fluids at alkaline pH and have a broad spectrum of activity against fungi and bacteria.

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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 June 5, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 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.
FiledApril 29, 1986
GrantedJune 5, 1990
Term endedJune 5, 2007
Patent numberCA 1269926 C
Classification (IPC)C10M141/12 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedApril 29, 1986Patent grantedJune 5, 1990Term endedJune 5, 2007

Sources & verification

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