Meta-halo-phenolic alkylation products and epoxy systems
CA 1322554 C · Owner: Bancroft, Eric E. · Inventors: Bancroft, Eric E.; Fritz, David B.; Wang, Chun S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a coupled aromatic compound represented by the formula, Ar-Y I wherein Ar is an aromatic moiety different from Y and Y is an aromatic moiety represented by one of the formulae:, 35,166-F, II, III, IV, V, VI or VII, wherein A is an aliphatic ring system bonded to the aromatic ring;, Q is separately at each occurrence hydrogen alkyl or inertly-substituted alkyl with proviso that the carbon atom bonded to the aromatic ring is a primary or secondary carbon atom. X is separately at each occurrence a halogen moiety, Z is a nitrogen- or chalcogen-containing moiety, and their preparation. The materials contain a 35,166-F, moiety such as, for example, …
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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 28, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 28, 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.