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Expired European patentEurope

Method and device for determining a pwm signal on which a dither frequency is superimposed in order to control a solenoid valve

EP 1797490 B1 · Applicant: SIEMENS AKTIENGESELLSCHAFT

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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 September 14, 2005 and granted February 11, 2009. A European patent lasts at most 20 years from filing, so its term ended September 14, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledSeptember 14, 2005
PublishedJune 20, 2007
GrantedFebruary 11, 2009
Term endedSeptember 14, 2025
Application numberEP 05786895
Classification (CPC)F16K31/0675 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedSep 14, 2005PublishedJune 20, 2007Patent grantedFeb 11, 2009Term endedSep 14, 2025

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

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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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