CAPACITANCE MEASURING CIRCUIT, CAPACITANCE MEASURING INSTRUMENT, AND MICROPHONE DEVICE

Details for Australian Patent Application No. 2002335368 (hide)

Owner SUMITOMO METAL INDUSTRIES, LTD.

Inventors YAKABE, Masami; IKEUCHI, Naoki

Pub. Number AU-A-2002335368

PCT Number PCT/JP02/09139

PCT Pub. Number WO2003/023422

Priority 2001-269992 06.09.01 JP

Filing date 6 September 2002

Wipo publication date 24 March 2003

International Classifications

G01R 027/26 Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom - Measuring inductance or capacitance

G01N 027/22 Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means - by investigating capacitance

H04R 003/06 Circuits for transducers

G01D 005/24 Mechanical means for transferring the output of a sensing member

Event Publications

13 February 2003 Complete Application Filed

  Priority application(s): 2001-269992 06.09.01 JP

19 June 2003 Application Open to Public Inspection

  Published as AU-A-2002335368

10 June 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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