Pneumatic conveyor for grainy material and suction nozzle for use in such conveyor
CA 2003990 A1 · Owner: Eisai Co. Ltd. · Inventors: Okano, Masanori; Yoshino, Tadashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hopper subjected to a suction effect of a vacuum source such as a vacuum pump is connected by a hose to a suction nozzle thrown into a container for grainy material and an ejector is provided to supply the suction nozzle with pressurized air and thereby a, smooth pneumatic conveyance of the grainy material is achieved. A cap laterally provided with openings is slidably put on an open end of the suction nozzle and a total opening area of the lateral openings is adjusted by axially sliding the cap on the open end of the suction nozzle.
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 November 27, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2011.
- 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.