Metalorganic compounds
CA 2198453 C · Owner: Rushworth, Simon Andrew · Inventors: Rushworth, Simon Andrew; Freer, Richard William; Jones, Anthony Copeland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a process for preparing metalorganic compounds and metalorganic amine adducts. A Grignard reagent is prepared and reacted with the metal halide in an amine solvent. The amine used can form a useful adduct with the metalorganic compound produced. Either the metalorganic compound or its amine adduct may be used for growing semiconductor layers by vapor phase epitaxial techniques.
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 September 4, 1995 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2017.
- 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.