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Expired Canadian patentCanada

Lateral dmos transistor device having an injector region

CA 1206627 A · Owner: N.V.Philips'Gloeilampenfabrieken · Inventors: Colak, Sel; Stupp, Edward H.; Singer, Barry M.

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

9, Abstract:, Lateral DMOS transistor device having an injector region. A lateral DMOS transistor includes a surface-adjoining injector region between the channel region and the drain region of the device. This injector region is connected to an external source of potential and serves to substantially decrease the on-resistance of the device by injecting minority carriers into the drift region when the device is in the "on" state. This improvement in on resistance is obtained without degrading the breakdown voltage characteristics of the transistor.

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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 June 24, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 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.
FiledDecember 22, 1983
GrantedJune 24, 1986
Term endedJune 24, 2003
Patent numberCA 1206627 A
Classification (IPC)H01L29/78 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedDec 22, 1983Patent grantedJune 24, 1986Term endedJune 24, 2003

Sources & verification

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