Electropolymerization of difunctional monomers to form polyimides
CA 1081652 A · Owner: Westinghouse Electric Corporation · Inventors: Alvino, William M.; Phillips, David C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Monomers having both an amino group and an anhydride or two carboxylic acid or salt groups are electropolymerized in solution. In an alcohol solvent the polymer forms as a coating on the anode and in an, aprotic solvent the polymer remains in solution. The polymer is cured to form a polyimide.
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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 July 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1997.
- 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
Timeline From CIPO dates
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.