Patent Yard Sign in
Expired Canadian patentCanada

Temperature pattern measuring method and device therefor

CA 1165444 A · Owner: Sumitomo Kinzoku Kogyo Kabushiki Gaisha · Inventors: Katayama, Yutaka; Hotta, Kazuyuki; Nemoto, Shin

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A temperature pattern measuring method and apparatus by which portions of light from parts of an area of an object the distribution pattern of the temperature of which is to be measured which parts are in a predetermined pattern are passed through, first and second optical filters which pass different wavelengths of light, respectively. The level of energy passed by the respective filters for the respective portions of light are determined by scanning the light from the filters with a pickup device or devices and using the thus determined energy levels an arith-, metic unit carries out a two-color temperature determining operation for the respective parts of the area for determining the …

Read the whole patent

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 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1981
GrantedApril 10, 1984
Term endedApril 10, 2001
Patent numberCA 1165444 A
Classification (IPC)G01J5/54 +1 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedFeb 24, 1981Patent grantedApril 10, 1984Term endedApril 10, 2001

Sources & verification

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