Method for the growth of industrial crystals
CA 2177345 C · Owner: Vichr, Miroslav · Inventors: Vichr, Miroslav; Hoover, David Samuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed for producing large single crystals. According to the initial steps of this method, a plurality of single crystal wafers are crystallographically, oriented to form a seed plate which is patterned. The patterned seed plate is selectively, etched to expose the bare surface of the seed plate. The exposed patterned , bare, surface of the seed plate is etched to form a plurality of nucleation structures. Each of, the nucleation structures protrude outwardly from the underlying surface of the seed, plate and provide ideal structures for the growth of large single crystals. , The resulting, large single crystals can be separated from the seed crystals by etching physical …
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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 May 24, 1996 and granted November 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2018.
- 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.