Patent Yard Sign in
Expired European patentEurope

Turbulence control system of an intra-channel clarifier

EP 0248959 B1 · Applicant: Beard, Harold James

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 June 13, 1986 and granted November 14, 1990. A European patent lasts at most 20 years from filing, so its term ended June 13, 2006.
  • 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 13, 2011.
  • 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 13, 1986
PublishedDecember 16, 1987
GrantedNovember 14, 1990
Term endedJune 13, 2006
Application numberEP 86304559
Classification (CPC)B01D21/02 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedJune 13, 1986PublishedDec 16, 1987Patent grantedNov 14, 1990Term endedJune 13, 2006

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.