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Expired Canadian patentCanada

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CA 1201299 A · Owner: Miles Laboratories, Inc. · Inventors: Brunsting, Albert

CIPO record

Overview

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

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Abstract From the Canadian patent

Reflectance apparatus is disclosed for obtaining the measurement of reflected light in which a light trap is positioned in the light path between the specimen and the detector to minimize stray light reflected from the specimen being analyzed as light from the light source is reflected from the specimen to the detector.

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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 March 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 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.
FiledAugust 25, 1983
GrantedMarch 4, 1986
Term endedMarch 4, 2003
Patent numberCA 1201299 A
Classification (IPC)G01J1/42 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedAug 25, 1983Patent grantedMarch 4, 1986Term endedMarch 4, 2003

Sources & verification

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