Carbon-based thin film, process for producing the same and member using the thin film
CA 2556782 C · Owner: Iwamura, Eiji · Inventors: Iwamura, Eiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a novel carbon-based material in which carbons different in property are combined in such a manner as to be applicable to , a device. The carbon-based thin film provides a carbon-based thin film 10 including first phases 1 that contain amorphous carbon and extend in a film thickness direction, and a second phase 2 that contains a graphite structure and , intervenes between the first phases 1. In the thin film at least one selected , from , the group consisting of the following a) to e) is satisfied: a) the second phase , contains more graphite structures per unit volume than the first phases; b) a density of the second phase is larger than that of the …
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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
- Filed February 25, 2005 and granted June 4, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.