Patent Yard Sign in
Expired Canadian patentCanada

Method and apparatus for measuring accumulated and instant rate of material loss or material gain

CA 2394083 C · Owner: Nielsen, Kaj Vendelbo · Inventors: Nielsen, Lars Vendelbo; Nielsen, Kaj Vendelbo

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

The present invention relates to a method and an apparatus for measuring accumulated and instant rate of material loss or material gain of metal elements for the detection of metal deposition (material gain) caused for example during deposition of coatings used in plating processes and corrosion (material loss) caused for example in pipelines during transportation of hazardous media. The apparatus and the method provides means for measuring accumulated and instant rate of material loss or material gain by inserting a probe in a measurement environment causing a probe to experience metal deposition or corrosion. Further the apparatus and the method provides means for performing a …

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 December 11, 2000 and granted October 4, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2022.
  • 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 11, 2000
GrantedOctober 4, 2011
Term endedDecember 11, 2020
Patent numberCA 2394083 C
Classification (IPC)G01N17/00 +1 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedDec 11, 2000Patent grantedOct 4, 2011Term endedDec 11, 2020

Sources & verification

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