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Expired European patentEurope

Composite crucible, and preparation method and regeneration method thereof

EP 0965663 B1 · Applicant: MITSUBISHI MATERIAL QUARTZ 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 17, 1999 and granted April 28, 2004. A European patent lasts at most 20 years from filing, so its term ended June 17, 2019.
  • 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 17, 2024.
  • 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 17, 1999
PublishedDecember 22, 1999
GrantedApril 28, 2004
Term endedJune 17, 2019
Application numberEP 99111747
Classification (CPC)C03B23/006 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJune 17, 1999PublishedDec 22, 1999Patent grantedApril 28, 2004Term endedJune 17, 2019

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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