Process for preparing superconducting oxide thin films
CA 2044439 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Nagaishi, Tatsuoki; Itozaki, Hideo; Hattori, Hisao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laser ablation process for preparing superconducting oxide thin films comprises ablating a target surface with pulsed laser beam to cause deposition of target molecules on a substrate. The incident laser beam on the target surface has an energy of at least 5 J/cm2 per pulse.
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 June 12, 1991 and granted September 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2013.
- 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.