Barrier coatings on spacecraft materials
CA 2000141 C · Owner: Wertheimer, Michael Robert · Inventors: Schreiber, Henry P.; Wertheimer, Michael Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A protective coating for the surfaces of organic polymers, to protect the surfaces against erosion by oxygen atoms, includes a thin protective barrier film on the surfaces. The film is deposited via a plasma e.g. a low pressure glow discharge, or other suitable methods. The material of the film can comprise plasma polymers, inorganic insulating films, or semiconducting or conductive materials.
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 October 4, 1989 and granted July 19, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2011.
- 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.