Process of diamond growth from c70
CA 2283268 A1 · Owner: Fu, Kejian · Inventors: Moskovits, Martin; Fu, Kejian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of growing single crystal diamonds in excess of 10 µm in diameter from industrial diamond "seeds" having mean diameters of approximately 1.5 µm is disclosed. The diamonds are grown by exposing the seed diamonds to C70 in the presence of elemental reducing agents such as phosphorus or selenium in evacuated cells at moderate temperatures and pressures. In another aspect of the invention, diamonds are grown by exposing diamond seed particles to vapour phase C70 in the presence of a gas phase metal carbonyl such as , Fe(CO)5 in a temperature range of 400 ~C to 700 ~C to cause at least some of the diamond seed particles to grow.
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 20, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 20, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2020.
- 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.