Expired European patentEurope
Signature circuit for non-volatile memory device
EP 0443775 B1 · Applicant: FUJITSU LIMITED
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 February 14, 1991 and granted May 2, 1997. A European patent lasts at most 20 years from filing, so its term ended February 14, 2011.
- 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 August 14, 2016.
- 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.
FiledFebruary 14, 1991
PublishedAugust 28, 1991
GrantedMay 2, 1997
Term endedFebruary 14, 2011
Application numberEP 91301196
Classification (CPC)G11C5/00 +1 more
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.