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Expired European patentEurope

Cryostat incorporating thermal coupling and condenser

EP 0021802 B1 · Applicant: AIR PRODUCTS AND CHEMICALS, INC.

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Overview

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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 20, 1980 and granted August 19, 1987. A European patent lasts at most 20 years from filing, so its term ended June 20, 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 December 20, 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.
FiledJune 20, 1980
PublishedJanuary 7, 1981
GrantedAugust 19, 1987
Term endedJune 20, 2000
Application numberEP 80302081
Classification (CPC)F17C13/006 +2 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJune 20, 1980PublishedJan 7, 1981Patent grantedAug 19, 1987Term endedJune 20, 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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