Expired European patentEurope
Process for the fabrication of holes in photoresist layers, use for the fabrication of electron sources comprising emissive cathodes with microtips and flat display screens
EP 0707237 B1 · Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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.
Why it's free to use
- Filed October 6, 1995 and granted March 10, 1999. A European patent lasts at most 20 years from filing, so its term ended October 6, 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 April 6, 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.
FiledOctober 6, 1995
PublishedApril 17, 1996
GrantedMarch 10, 1999
Term endedOctober 6, 2015
Application numberEP 95402238
Classification (CPC)G03F7/20 +2 more
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.