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Expired Canadian patentCanada

Lithographic water based fountain solution concentrates

CA 1251881 A · Owner: Inmont Corporation · Inventors: Thiebaut, Bernard

CIPO record

Overview

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

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Abstract From the Canadian patent

Lithographic Water Based Fountain Solution Concentrates Lithographic fountain solution concentrates which are combined with water to form improved fountain solutions. The concentrates contain specific quantities of buffer salts resulting in improved printing process characteristics. The buffer salts are the salts of polycarboxylic acids and organic bases such as amines. The use of alcohol in the fountain solutions is eliminated or substantially reduced.

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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 March 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 28, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 25, 1983
GrantedMarch 28, 1989
Term endedMarch 28, 2006
Patent numberCA 1251881 A
Classification (IPC)C09D5/20 +1 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedNov 25, 1983Patent grantedMarch 28, 1989Term endedMarch 28, 2006

Sources & verification

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