Expired European patentEurope
On the counter deactivator
EP 0673537 B1 · Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
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 September 21, 1993 and granted January 8, 1997. A European patent lasts at most 20 years from filing, so its term ended September 21, 2013.
- 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 March 21, 2019.
- 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.
FiledSeptember 21, 1993
PublishedSeptember 27, 1995
GrantedJanuary 8, 1997
Term endedSeptember 21, 2013
Application numberEP 93921713
Classification (CPC)G08B13/2411
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.