Method of detecting clogging and granulation method
CA 2224370 C · Owner: Toyo Engineering Corporation · Inventors: Kido, Kimikazu; Honda, Tetsuzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a method for detecting clogging of air feed pipes, comprising air feed pipes (15), each having an outlet (13) for jetting air into a granulation section (1), and jetting nozzles (13) each, situated at the center of the air outlet of a said air feed pipe for jetting a liquid of a molten raw material (e.g. molten urea), wherein, in jetting the liquid of the molten raw material from the jetting nozzles into the granulation section to carry out granulation (a) an orifice section (14) is provided at a lower part of each of the air feed pipes (15) a section for, taking up orifice rear pressure (16) is provided in each air feed pipe and is located downstream of the orifice …
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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 April 8, 1997 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2019.
- 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.