Expired Canadian patentCanada
Method for inspecting density of carbon fibers in a substrate by infrared imaging
CA 2074811 C · Owner: Abb Amdata Inc. · Inventors: Clark, John Gregory; Sapia, Mark Angelo
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
SUBSTITUTE, REMPLACEMENT, SECTION is not Present Cette Section est Absente
Read the whole patent
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
- Filed November 21, 1990 and granted June 7, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 21, 1990
GrantedJune 7, 1994
Term endedNovember 21, 2010
Patent numberCA 2074811 C
Classification (IPC)G01N21/71 +1 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.