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Expired Canadian patentCanada

Granulating and coating machine

CA 1209791 A · Owner: Freund Industrial Co. Ltd. · Inventors: Takei, Narimichi; Kurita, Kaoru; Sakashita, Shizuka

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A granulating and coating machine for use in granulation, coating, mixing, drying etc. of powdery or granular materials. The machine includes a casing for holding the powdery or granular raw materials a rotator, for performing granulation or coating arranged at the bottom of the casing and formed with at least one ventilating portion, an annular slit formed between the periphery of the rotator and the inner wall of the casing. A gas flow adjusting mechanism including two separated ducts for gas flow is provided in order to control independently the rate of gas fed through the ventilating portion and the slit gas fed through the slit. An agitator for agitating the powdery or granular …

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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

  • Granted August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 23, 1983
GrantedAugust 19, 1986
Term endedAugust 19, 2003
Patent numberCA 1209791 A
Classification (IPC)B01J2/14 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedSep 23, 1983Patent grantedAug 19, 1986Term endedAug 19, 2003

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.