Process for preparing anisotropic shaped bodies based on poly-piperazinamides
CA 1251311 A · Owner: Montedison S.P.A. · Inventors: Bastioli, Catia; Parrini, Paolo; Gianotti, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for preparing anisotropic shaped bodies based on polypiperazinamides, comprising: preparing a solution of the polymer in a polar organic solvent; transforming the solution into shaped bodies by spreading or spinning; gelling the shaped bodies by phase-reversal; and possible thermal (heat) treatment of the gelled shaped bodies.
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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 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 21, 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.
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.