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Expired European patentEurope

Fabrication of preforms for optical fibers by chemical vapor deposition using a plasma torch

EP 0096878 B1 · Applicant: International Standard Electric Corporation

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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 June 11, 1983 and granted November 26, 1986. A European patent lasts at most 20 years from filing, so its term ended June 11, 2003.
  • 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 December 11, 2008.
  • 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.
FiledJune 11, 1983
PublishedDecember 28, 1983
GrantedNovember 26, 1986
Term endedJune 11, 2003
Application numberEP 83105736
Classification (CPC)C03B37/01426

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJune 11, 1983PublishedDec 28, 1983Patent grantedNov 26, 1986Term endedJune 11, 2003

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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