Patent Yard Sign in
Expired European patentEurope

Process for the production of hydrogen by means of heterogeneous photoredox catalysis, and the catalysts employed therein

EP 0100299 B1 · Applicant: CIBA-GEIGY AG

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed July 15, 1983 and granted September 17, 1986. A European patent lasts at most 20 years from filing, so its term ended July 15, 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 January 15, 2009.
  • 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.
FiledJuly 15, 1983
PublishedFebruary 8, 1984
GrantedSeptember 17, 1986
Term endedJuly 15, 2003
Application numberEP 83810320
Classification (CPC)C01B3/046

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJuly 15, 1983PublishedFeb 8, 1984Patent grantedSep 17, 1986Term endedJuly 15, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.