Expired Canadian patentCanada
Process for preparation of tooling for composites manufacture
CA 1294863 C · Owner: Gupta, Dipak · Inventors: Gupta, Dipak
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Process for Preparation of Tooling for Composite Manufacture, ABSTRACT, Two-stage curing of composite tooling of carbon fiber reinforced polyimide of high Tg.
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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 January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 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.
FiledSeptember 22, 1989
GrantedJanuary 28, 1992
Term endedJanuary 28, 2009
Patent numberCA 1294863 C
Classification (IPC)C08J5/24 +2 more
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.