N-substituted arylcyclobutenyl-unsaturated cyclic imides
CA 1300635 C · Owner: Kirchhoff, Robert A. · Inventors: Kirchhoff, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a compound which comprises an unsaturated cyclic imide moiety, such as maleimide and an aryl, cyclobutene moiety, such as a benzocyclobutenyl moiety wherein, the cyclobutene moiety is fused to the aryl radical and wherein, the imide nitrogen is connected to the aryl radical by a direct bond or a bridging member. Such compounds may have the structural formula, Another aspect of this invention is a polyimide polymeric composition which results from the polymerization of the above-described compounds.
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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 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
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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.