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Expired European patentEurope

Process for generating active laser states in a gas flow

EP 0018535 B1 · Applicant: DEUTSCHE FORSCHUNGSANSTALT FÜR LUFT- UND RAUMFAHRT e.V.

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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 April 15, 1980 and granted June 22, 1983. A European patent lasts at most 20 years from filing, so its term ended April 15, 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 October 15, 2005.
  • 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.
FiledApril 15, 1980
PublishedNovember 12, 1980
GrantedJune 22, 1983
Term endedApril 15, 2000
Application numberEP 80102008
Classification (CPC)H01S3/0979

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedApril 15, 1980PublishedNov 12, 1980Patent grantedJune 22, 1983Term endedApril 15, 2000

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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