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Expired Canadian patentCanada

Solid-state imaging device

CA 1135821 A · Owner: Hitachi, Ltd. · Inventors: Takasaki, Yukio; Koike, Norio; Yamamoto, Hideaki

CIPO record

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

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Abstract From the Canadian patent

Abstract of the Disclosure A solid-state imaging device has a semiconductor integrated circuit comprising a plurality of switching elements for addressing picture elements and scanning circuitry for turning the switching elements "on" and "off" in time sequence disposed on an identical substrate. A photoconductive film is disposed on the integrated circuit and is connected with the respective switching elements. A light transmitting electrode is disposed on the photoconductive film and a voltage is applied to the light transmitting electrode to bias a region of the photoconductive film on a light entrance side thereof either positively or negatively with respect to a region thereof on the …

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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 November 16, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 3, 1980
GrantedNovember 16, 1982
Term endedNovember 16, 1999
Patent numberCA 1135821 A
Classification (IPC)H01L27/14 +2 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedJune 3, 1980Patent grantedNov 16, 1982Term endedNov 16, 1999

Sources & verification

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