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European application, no grantEurope

Tunnel unit and scanning head for scanning tunneling microscope

EP 0664448 A2 · Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

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Overview

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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.

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Why it's free to use

  • Filed June 20, 1989 and never granted as a European patent. Had it been granted, its 20-year term would have ended June 20, 2009.
  • 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 December 20, 2014.
  • 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.
FiledJune 20, 1989
PublishedJuly 26, 1995
GrantedNever granted
Term endedJune 20, 2009
Application numberEP 95103363
Classification (CPC)G01Q10/04 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedJune 20, 1989PublishedJuly 26, 1995Term endedJune 20, 2009

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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