201974 ⎘
Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture; Electrets, i.e. having a permanently-polarised dielectric having a heterogeneous dielectric
ELECTRETS FOR POWER ELECTRONIC APPLICATIONS
#2Electret element, microphone having electret element mounted therein and electret element manufacturing method
#3Electret-containing filter media
#4Tunable shape memory capacitor and a method of preparation thereof
#5Element and electric generator
#6Electret element, microphone having electret element mounted therein and electret element manufacturing method
#7Piezoelectric stack
#8Process for producing electret, and electrostatic induction conversion device
#9Electret material and electrostatic-type acoustic transducer
#10Hybrid Electret
#11Electret and electrostatic induction conversion device
#12FERROELECTRIC VARACTOR WITH IMPROVED TUNING RANGE
#13Description of an inorganic polymer "electret" in a colloidal state along with the method of generating and applications