Patent Yard Sign in
Expired Canadian patentCanada

Quantitative analysis of an analyte in a liquid using a test element having a fibrous spreading layer

CA 1162075 A · Owner: Eastman Kodak Company · Inventors: Columbus, Richard L.

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

Abstract, In a method for quantitative analysis wherein liquid is applied to a test element containing one or more reagents and comprising a fibrous spreading layer and optionally a permeable layer, a liquid transport zone is provided at the point of introduction of the liquid to facilitate accurate and precise measurements.

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 February 14, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 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 12, 1981
GrantedFebruary 14, 1984
Term endedFebruary 14, 2001
Patent numberCA 1162075 A
Classification (IPC)G01N31/00

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedFeb 12, 1981Patent grantedFeb 14, 1984Term endedFeb 14, 2001

Sources & verification

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