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Expired Canadian patentCanada

Charge-coupled device and method of manufacturing the same

CA 1267975 C · Owner: Slotboom, Jan W. · Inventors: Slotboom, Jan W.; Osinski, Kazimierz; Maas, Henricus G. R.

CIPO record

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Abstract From the Canadian patent

Charge-coupled semiconductor device and method of manufacturing the same". A charge-coupled semiconductor device having a plurality of silicon electrodes (1, 3, 5 7, 9) for storing, and transporting information-carrying charge which, electrodes are located on an insulating layer (21) and are mutually separated by grooves having a width of at most l/um. According to the invention, transfer electrodes (2, 4, 6, 8, 10) are arranged in the grooves these, electrodes being coplanar to the remaining electrodes (1, 3, 5, 7, 9). The thickness of the insulating layer under the transfer electrodes is substantially equal to that under the storage electrodes. The invention also relates to a method of …

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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 April 17, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 8, 1986
GrantedApril 17, 1990
Term endedApril 17, 2007
Patent numberCA 1267975 C
Classification (IPC)H01L21/28 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedMay 8, 1986Patent grantedApril 17, 1990Term endedApril 17, 2007

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