201972 ⎘
Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture; Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric
Sub-classes:DIELECTRIC CAPACITOR FORMED OF A DIELECTRIC-COATED ELECTRICALLY CONDUCTIVE POROUS SCAFFOLD FILLED WITH METAL
#2Power generator
#3Power generator having an electret for harvesting energy
#4Electret
#5Electret
#6Electret
#7Timepiece
#8Electret element, microphone having electret element mounted therein and electret element manufacturing method
#9Ultra-high charge density electrets and method of making same
#10Electret element, electromechanical converter and method for manufacturing electret element
#11Electret element, microphone having electret element mounted therein and electret element manufacturing method
#12Detector comprising a variable capacitance diode
#13Polymer electret and method of manufacturing the same
#14Method for manufacturing three-dimensionally shaped comb-tooth electret electrode
#15Method for forming electret containing positive ions
#16ELECTRETIZATION METHOD OF CONDENSER MICROPHONE, ELECTRETIZATION APPARATUS, AND MANUFACTURING METHOD OF CONDENSER MICROPHONE USING IT
#17Spectral resistor, spectral capacitor, order-infinity resonant tank, EM wave absorbing material, and applications thereof
#18Electret covered with an insulated film and an electret condenser having the electret
#19Description of an inorganic polymer "electret" in a colloidal state along with the method of generating and applications