Extract from the Register of European Patents

EP About this file: EP0004626

EP0004626 - Method and circuit for producing ultrasonic pulses for use in an impulse echo system [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  14.09.2016
Database last updated on 28.03.2026
Most recent event   Tooltip14.09.2016No opposition filed within time limit 
Applicant(s)For all designated states
SIEMENS AKTIENGESELLSCHAFT
Werner-von-Siemens-Str. 1
DE-80333 München / DE
[N/P]
Inventor(s)01 / Hassler, Dieter
Flurweg 3
D-8521 Uttenreuth / DE
02 / Schwarz, Robert
Erlanger Strasse 6
D-8521 Hessdorf / DE
[N/P]
Application number, filing date79100909.526.03.1979
Priority number, dateDE1978281372930.03.1978         Original published format: DE 2813729
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP0004626
Date:17.10.1979
Language:DE
[N/P]
Type: B1 Patent specification 
No.:EP0004626
Date:25.11.1981
Language:DE
[1981/47]
Search report(s)(Supplementary) European search report - dispatched on:EP17.07.1979
ClassificationIPC:G01S15/10, A61B10/00
[1981/47]
CPC:
G01S15/101 (EP,US)
Former IPC [1981/47]G01S9/68, A61B10/00
Designated contracting statesCH,   FR,   GB,   NL [1981/47]
Former [N/P]CH,  DE,  FR,  GB,  NL 
TitleGerman:Verfahren und Schaltungsanordnung zur Anregung von Ultraschallschwingern, die in der Impuls-Echo-Technik eingesetzt werden
English:Method and circuit for producing ultrasonic pulses for use in an impulse echo system
French:Procédé et circuit de génération d'impulsions ultrasoniques pour système d'écho d'impulsion
File destroyed:12.06.1999
Examination procedure16.01.1980Examination requested  [1980/07]
13.11.1980Despatch of a communication from the examining division (Time limit: M02)
05.12.1980Reply to a communication from the examining division
23.04.1981Despatch of communication of intention to grant (Approval: )
09.06.1981Communication of intention to grant the patent
21.07.1981Fee for grant paid
21.07.1981Fee for publishing/printing paid
Opposition(s)25.08.1982No opposition filed within time limit [ N /P ]
Fees paidRenewal fee
16.03.1981Renewal fee patent year 03
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Documents cited:SearchDE2629562  (DANFOSS AS)
 US3360769  (LORD NORMAN W et al.)
 US2651012  (VALKENBURG HOWARD E VAN et al.)
 US3274821  (GORDON WEIGHART FREDERICK et al.)
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