Low dielectric constant laminate of fluoropolymer and polyaramid
CA 1298770 C · Owner: Mcewen, Craig S. · Inventors: Mcewen, Craig S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laminate comprising a perfluoropolymer reinforced with polyaramid positioned between two layers of copper is disclosed. The laminate comprises in order (1) a layer of copper (2) a, layer of fluoropolymer selected from the group consisting of polytetrafluoroethylene, a copolymer of tetrafluoroethylene and hexafluoropropylene a, copolymer of tetrafluoroethylene and perfluoro (propyl vinyl ether), a terpolymer of, tetrafluoroethylene hexafluoropropylene, and, perfluoro (propyl vinyl ether) and a terpolymer of tetrafluoroethylene, hexafluoropropylene and, perfluoro (ethyl vinyl ether) which is reinforced with a woven or non-woven fabric of polyaramid fiber, such that the volume percent of …
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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 April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
- 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.