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Expired European patentEurope

Method of generating gas bubbles in oleaginous liquids

EP 1276552 B1 · Applicant: MASI Technologies, L.L.C.

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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 April 4, 2001 and granted January 19, 2005. A European patent lasts at most 20 years from filing, so its term ended April 4, 2021.
  • 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 October 4, 2026.
  • 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.
FiledApril 4, 2001
PublishedJanuary 22, 2003
GrantedJanuary 19, 2005
Term endedApril 4, 2021
Application numberEP 01923066
Classification (CPC)C09K8/32 +1 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedApril 4, 2001PublishedJan 22, 2003Patent grantedJan 19, 2005Term endedApril 4, 2021

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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