Method and system for producing fullerene
CA 2376887 A1 · Owner: Sony Corporation · Inventors: Miyakoshi, Mitsuaki; Yamada, Atsuo; Kajiura, Hisashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for mass producing fullerenes especially carbon nanotubes, easily , with high yield by generating arc discharge between a pair of carbon rod electrodes (1), (2) and supplying gas containing carbon between the pair of carbon rod electrodes (1), (2) from a gas supply pipe (8) or a through hole (16).
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 April 18, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2023.
- 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.