Phenoxy propanol containing developer compositions for lithographic plates having neutral ph
CA 1329036 C · Owner: Hoechst Celanese Corporation · Inventors: Hsieh, Shane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A developer composition having a pH in the range of from about 6.5 to about 7. comprising in admixture: a) from about 0.1% to about 20% by weight of the developer of one or more compounds selected from the group consisting of sodium octyl sulfate, sodium tetradecyl sulfate, sodium 2-ethyl hexyl sulfate and ammonium lauryl sulfate; and, b) from about 0.1% to about 30% by weight of the developer of one or more components selected from the group consisting of lithium salts of hydroxy, aryl and alkyl carboxylic acids; and c) from about 0.1% to about 30% by weight of the developer of one or more compounds selected from the group consisting of potassium salts of hydroxy, aryl and alkyl carboxylic …
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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 May 3, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 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.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.