Closed type mixer-kneader
CA 2004631 A1 · Owner: Kabushiki Kaisha Kobe Seiko Sho · Inventors: Asai, Toshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described herein is a meshed rotor type closed mixer which is improved in material seizing action as well as in productivity and operational stability, the mixer having a pair of meshed rotors mounted parallelly for rotation in opposite directions within a mixing chamber hermetically closed by a casing and end frames and being provided with, a plural number of pins planted on body portions of rotor wings over a range greater than 1/2 of the axial length of the rotors.
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 December 5, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 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.