Patent Yard Sign in
Expired Canadian patentCanada

Pyridine-containing (poly) peroxycarboxylic acid compounds

CA 1332736 C · Owner: Venturello, Carlo · Inventors: Cavallotti, Claudio; Venturello, Carlo

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

Nitrogen-containing aromatic heterocyclic (poly)peroxycarboxylic acids having the formula: (I), wherein R represents a hydrogen atom or a straight or branched alkyl, (hetero)cycloalkyl, (hetexo)aryl alkylaryl or arylalkyl, group, wherein said groups are optionally substituted or a, carboxylic group or any other substituents non-reactive in the presence of the active oxygen of the peroxycarboxylic group; n is a number selected from 0 and 1;, m is a number selected from 1 2 and 3, and, represents an acidic anion selected from HSO4- and CH3SO3- , and wherein the pyridinic ring may in its turn be condensed with at least one further (hetero) aromatic or (hetero)cycloalkylic ring;, to their …

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 October 25, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 25, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 19, 1988
GrantedOctober 25, 1994
Term endedOctober 25, 2011
Patent numberCA 1332736 C
Classification (IPC)C07D213/79 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 19, 1988Patent grantedOct 25, 1994Term endedOct 25, 2011

Sources & verification

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