Method for granulation and granulator
CA 2245992 C · Owner: Honda, Tetsuzo · Inventors: Kido, Kimikazu; Yanagisawa, Yuzuru; Fujii, Hidetsugu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed an improved, energy-saving granulation method, wherein use is made of a granulator (1) having a bottom floor (9) of a granulation section whose bottom is a perforated plate, an upper air feed pipe (23) for feeding air for fluidization to the bottom floor of the granulation section, a lower air feed pipe (2) air, feed pipes (3, 4, 5) branched from the lower air feed pipe for jetting air into the granulation section and jetting, nozzles (6, 7, 8) provided at the centers of the air outlets for jetting a molten raw material; which comprises jetting a molten raw material from the jetting nozzles to approximately spherical nuclei in the granulation section which have been fed …
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 August 26, 1998 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 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.