Liquid-crystalline, thermotropic aromatic polyesters
CA 1320788 C · Owner: Gardano, Andrea · Inventors: Casagrande, Francesco; Chapoy, L. Lawrence; Gardano, Andrea
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Liquid-crystalline thermotropic, aromatic poly-, esters processable in the molten state comprising units, derived from aromatic or cycloaliphatic dicarboxylic acid hydroquinones substituted with aryl, aralkyl and aroyl groups containing 6 to 20 carbon atoms and from phenoxy-, hydroquinone. These polyesters are easily processable in the molten state.
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 July 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 27, 2010.
- 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.