Patent Yard Sign in
Expired Canadian patentCanada

Discrete level measurement device with automatic threshold setting

CA 2448700 C · Owner: Hafer, Kevin G. · Inventors: Hafer, Kevin G.

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 system and method are provided for automatically setting a thr eshold for a point level device without having a user select whether a point level element is covered or uncovered. A first and second value are measured from a point level element. Whether the point level element is covered or uncovered is determined based on whether the second measured value has increased or decreased with respect to the first measured value. A threshold value is determined based on at least one of the first and second measured values.

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

  • Filed May 24, 2002 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 24, 2002
GrantedOctober 8, 2013
Term endedMay 24, 2022
Patent numberCA 2448700 C
Classification (IPC)G01F25/00 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMay 24, 2002Patent grantedOct 8, 2013Term endedMay 24, 2022

Sources & verification

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