Patent Yard Sign in
Expired European patentEurope

A method of checking the loading and unloading of tankers by means of an electromagnetic identification system, and an identification system for use in said method

EP 0258935 B1 · Applicant: N.V. Nederlandsche Apparatenfabriek NEDAP

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed August 24, 1987 and granted November 15, 1989. A European patent lasts at most 20 years from filing, so its term ended August 24, 2007.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by February 24, 2013.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledAugust 24, 1987
PublishedMarch 9, 1988
GrantedNovember 15, 1989
Term endedAugust 24, 2007
Application numberEP 87201593
Classification (CPC)B67D7/06 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedAug 24, 1987PublishedMarch 9, 1988Patent grantedNov 15, 1989Term endedAug 24, 2007

Sources & verification