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Expired European patentEurope

A power supply apparatus for electrical discharge machining and an electrical discharge interval control method using the power supply apparatus

EP 0696488 B1 · Applicant: FANUC LTD.

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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 August 11, 1995 and granted June 10, 1998. A European patent lasts at most 20 years from filing, so its term ended August 11, 2015.
  • 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 11, 2021.
  • 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 11, 1995
PublishedFebruary 14, 1996
GrantedJune 10, 1998
Term endedAugust 11, 2015
Application numberEP 95305630
Classification (CPC)B23H1/022

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedAug 11, 1995PublishedFeb 14, 1996Patent grantedJune 10, 1998Term endedAug 11, 2015

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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