Expired European patentEurope
A method for recording signals on bands by means of laser beams and apparatus for carrying out the method
EP 0041982 B1 · Applicant: MAGYAR TUDOMANYOS AKADEMIA SZAMITASTECHNIKAI ES AUTOMATIZALASI KUTATO INTEZETE
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 December 11, 1980 and granted March 20, 1985. A European patent lasts at most 20 years from filing, so its term ended December 11, 2000.
- 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 June 11, 2006.
- 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.
FiledDecember 11, 1980
PublishedDecember 23, 1981
GrantedMarch 20, 1985
Term endedDecember 11, 2000
Application numberEP 81900053
Classification (CPC)G03G15/04072 +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.