Polyimide laminate and process for the preparation of same
CA 1285696 C · Owner: Okey, David W. · Inventors: Okey, David W.; Lee, Raymond; Ferro, Gregory A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laminate and a method for its preparation comprising a polyimide foam, a fire-resistant heat-activated, adhesive overlaying a skin on the foam and a polyimide film adhered to the skin, with the laminate being prepared by contacting a foam in contact with the adhesive and film under heat and pressure to simultaneously form a skin on one surface of the foam and bond the polyimide film through the adhesive to the skin.
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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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
- 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.