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Expired European patentEurope

Screw rotor compressor

EP 0276252 B1 · Applicant: SVENSKA ROTOR MASKINER AB

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Overview

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

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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 26, 1987 and granted January 3, 1990. A European patent lasts at most 20 years from filing, so its term ended June 26, 2007.
  • 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 26, 2012.
  • 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 26, 1987
PublishedAugust 3, 1988
GrantedJanuary 3, 1990
Term endedJune 26, 2007
Application numberEP 87904634
Classification (CPC)F04C29/12 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJune 26, 1987PublishedAug 3, 1988Patent grantedJan 3, 1990Term endedJune 26, 2007

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.