Ozone producing apparatus
CA 2242999 C · Owner: Yuge, Hiroshi · Inventors: Hirotsuji, Junji; Nakayama, Shigeki; Tanimura, Yasuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ozone producing apparatus comprising an ozone generator for generating ozonized oxygen an adsorption/, desorption tower for adsorbing and storing ozone from the ozonized oxygen, and an ozone desorbing means for desorbing adsorbed and stored ozone for supply wherein, the apparatus further includes an oxygen gas supply means for supplying oxygen to the adsorption/desorption tower at the time of desorption is started and an oxygen gas flow rate adjusting means for adjusting flow rate of the oxygen gas to be supplied. Ozone injection can be made definite and the apparatus is economical in the aspect of both initial and running costs. It presents great effects of preventing slime adhesion and …
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 July 13, 1998 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2020.
- 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.