Method and reaction apparatus for treating object with gas
CA 2447350 C · Owner: Fukoku Co. Ltd. · Inventors: Sueoka, Kazuhiko; Takada, Yasuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed a method and a reaction apparatus which can safely and continuously treat/discharge especially a short object to be treated without any direct contact with a gas atmosphere and which surely/efficiently treats the object with a gas without any uneven treatment. A short object A to be treated is put in a hermetically sealed cylindrical treatment section 1. In the treatment section 1 the object is held in a predetermined position by a first operation piece 11 to be treated with a gas for a predetermined time. Then the holding by the first operation piece is released to move the object A by a desired distance. Subsequently the object is held in a predetermined position by a …
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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 October 30, 2003 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2025.
- 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
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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.