Method for making a diamond coated structure
CA 2120175 A1 · Owner: Bigelow, Louis K. · Inventors: Bigelow, Louis K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed of forming a diamond coated optical window or dome, comprising the following steps: -providing a mandrel having a concave surface; depositing a diamond film on the concave surface by chemical vapor deposition; depositing an optically selective material on the diamond film; and removing the diamond film, with the optically selective material thereon from the mandrel.
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 March 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2016.
- 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.