Assignee
MICROTEL BV
NL·5 granted patents·352 citations·filing 1977–1989
Top patents by PatentIndex Score
5 records- 0194US4910840AElectroacoustic transducer of the so-called "electret" type, and a method of making such a transducerMICROTEL BV·Filed 1989·Granted Mar 27, 1990·157 cites·6 claims
- 0294US4908805AElectroacoustic transducer of the so-called "electret" type, and a method of making such a transducerMICROTEL BV·Filed 1988·Granted Mar 13, 1990·117 cites·5 claims
- 0374US4126769AMoving armature transducer with reinforced and pivoted diaphragmMICROTEL BV·Filed 1977·Granted Nov 21, 1978·41 cites·5 claims
- 0467US4160881AElectret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate with screen junctions overlaying the aperturesMICROTEL BV·Filed 1977·Granted Jul 10, 1979·20 cites·7 claims
- 0553US4567382AElectret transducer and a method for manufacturing an assembly of backplate, electret foil and diaphragm plateMICROTEL BV·Filed 1984·Granted Jan 28, 1986·17 cites·8 claims
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