Substituted unsaturated bicyclic imides and polymers thereof
CA 1211114 A · Owner: Ciba-Geigy Investments Ltd. · Inventors: Renner, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted unsaturated bicyclic imides and polymers thereof Abstract, Imides of the formula I, (I) in which E, R and n are as defined in Patent Claim 1 are, intermediates for the preparation of crosslinked polymers with excellent physical properties. The polymers can be used, in particular, for the preparation of glass fibrereinforced and carbon fibre-reinforced plastics and as electrical insulating materials.
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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 September 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 2003.
- 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.