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Expired European patentEurope

Constant temperature gradient differential thermal mass flow sensor

EP 1272819 B1 · Applicant: MKS INSTRUMENTS, INC.

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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 March 28, 2001 and granted June 29, 2011. A European patent lasts at most 20 years from filing, so its term ended March 28, 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 September 28, 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.
FiledMarch 28, 2001
PublishedJanuary 8, 2003
GrantedJune 29, 2011
Term endedMarch 28, 2021
Application numberEP 01922794
Classification (CPC)G01F5/00 +1 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedMarch 28, 2001PublishedJan 8, 2003Patent grantedJune 29, 2011Term endedMarch 28, 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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