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Expired Canadian patentCanada

X-ray examining device with automatic timer and film container for an x-ray examining device

CA 1102920 A · Owner: N.V. Philips Gloeilampenfabrieken · Inventors: Richter, Detlev

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

In institutes for X-ray examination only one type of intensifying screen is generally used although various types of intensifying screens are at their disposal, which are specially attuned to the requirements of specific methods of examination. The reason for this might be that the automatic timer with the prior art X-ray examining devices only permitted the use of one intensifying screen. The invention enables the use of different types of intensifying screens without demanding more attention from the radiologist.

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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 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
  • 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 14, 1976
GrantedJune 9, 1981
Term endedJune 9, 1998
Patent numberCA 1102920 A
Classification (IPC)G01J1/42 +1 more

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedDec 14, 1976Patent grantedJune 9, 1981Term endedJune 9, 1998

Sources & verification

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