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Expired Canadian patentCanada

Fish sex discrimination equipment and method

CA 1306782 C · Owner: Kato, Osamu · Inventors: Koike, Yusuke; Sekiya, Naoyuki; Miyakawa, Tatsuo

CIPO record

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Abstract From the Canadian patent

Fish sex discrimination equipment and method comprising an automatic supplying unit a light, projection and reception detection unit a discrimi-, nation control unit, a discharge unit and a first, conveyor and a second conveyor and also comprising, the steps of automatically supplying fish to be discriminated, transmitting light to a genital gland area of the fish, scanning the light, discriminating the sex of the fish based on the quantity of light transmitted, for example, a mean value or integrated value, and discharging the fish through the first or second conveyor which corresponds to the sex of the fish.

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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 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 30, 1989
GrantedAugust 25, 1992
Term endedAugust 25, 2009
Patent numberCA 1306782 C
Classification (IPC)A01K61/95 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedAug 30, 1989Patent grantedAug 25, 1992Term endedAug 25, 2009

Sources & verification

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