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Bleach systems comprising bis- and tris (.mu.-oxo)dimanganese complex salts

CA 2194342 A1 · Owner: Beller, Matthias · Inventors: Reinhardt, Gerd; Beller, Matthias; Tafesh, Ahmed

CIPO record

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Abstract From the Canadian patent

Bleach systems comprising bis- and tris(µ-oxo)dimanganese complex salts as catalyst, Bis- and tris(µ-oxo)dimanganese complex salts of the formula LMn(µ-O)a(µ-OAc)bMnLXAy, as catalysts for oxidizing organic compounds in which formula, Ac is a C2-C8-acyl group a is 1, 2 or 3, b is 0 if a is 2 or 3 or is 2 if a is 1 x denotes the number of positive charges and is 2 or 3 A is an anion, y is the equivalent amount of anion A required to compensate the positive charges, and, L is a ligand, preferably N,N'-bis(2-pyridylmethyl)-N-methylamine or N,N,N',N'-tetrakis(2-pyridylmethyl)-1,2-ethylenediamine are employed as catalysts in bleach systems for textile material.

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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

  • Filed January 3, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 3, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 3, 1997
GrantedNo grant recorded
Term endedJanuary 3, 2017
Patent numberCA 2194342 A1
Classification (IPC)C11D7/54 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJan 3, 1997Term endedJan 3, 2017

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