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Expired European patentEurope

Purification of human growth hormone

EP 0026045 B1 · Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED

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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 August 15, 1980 and granted July 13, 1983. A European patent lasts at most 20 years from filing, so its term ended August 15, 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 February 15, 2006.
  • 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 15, 1980
PublishedApril 1, 1981
GrantedJuly 13, 1983
Term endedAugust 15, 2000
Application numberEP 80302822
Classification (CPC)C07K14/61

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedAug 15, 1980PublishedApril 1, 1981Patent grantedJuly 13, 1983Term endedAug 15, 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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