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Expired European patentEurope

Novel crystalline aluminosilicate, process for the preparation thereof, and process for the conversion of organic materials using the same

EP 0170751 B1 · Applicant: Tonen 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 August 10, 1984 and granted March 15, 1989. A European patent lasts at most 20 years from filing, so its term ended August 10, 2004.
  • 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 February 10, 2010.
  • 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.
FiledAugust 10, 1984
PublishedFebruary 12, 1986
GrantedMarch 15, 1989
Term endedAugust 10, 2004
Application numberEP 84305485
Classification (CPC)C07C6/123 +2 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedAug 10, 1984PublishedFeb 12, 1986Patent grantedMarch 15, 1989Term endedAug 10, 2004

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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