Inventor
WEST JAMES E
US24 patents
⚠️ This page may combine multiple inventors who share the name “WEST JAMES E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BELL TELEPHONE LABOR INC
6 patentsUS4434327AFeb 28, 1984
Electret transducer with variable actual air gap
BELL TELEPHONE LABOR INC29 citations92
US4429193AJan 31, 1984
Electret transducer with variable effective air gap
BELL TELEPHONE LABOR INC45 citations92
US4429191AJan 31, 1984
Electret transducer with variably charged electret foil
BELL TELEPHONE LABOR INC7 citations73
US4429192AJan 31, 1984
Electret transducer with variable electret foil thickness
BELL TELEPHONE LABOR INC14 citations73
US4248808AFeb 3, 1981
Technique for removing surface and volume charges from thin high polymer films
BELL TELEPHONE LABOR INC4 citations63
US4429189AJan 31, 1984
Electret transducer with a selectively metalized backplate
BELL TELEPHONE LABOR INC4 citations60
AT & T BELL LAB
5 patentsUS4524247AJun 18, 1985
Integrated electroacoustic transducer with built-in bias
AT & T BELL LAB90 citations93
US5303307AApr 12, 1994
Adjustable filter for differential microphones
AT & T BELL LAB34 citations92
US4965775AOct 23, 1990
Image derived directional microphones
AT & T BELL LAB35 citations92
US4598590AJul 8, 1986
Electret transducer for blood pressure measurement
AT & T BELL LAB12 citations73
US4612145ASep 16, 1986
Method for producing electret-containing devices
AT & T BELL LAB6 citations57
UNIV JOHNS HOPKINS
4 patentsUS10765399B2Sep 8, 2020
Programmable electronic stethoscope devices, algorithms, systems, and methods
UNIV JOHNS HOPKINS10 citations79
US9484524B2Nov 1, 2016
Piezoelectric compositions
UNIV JOHNS HOPKINS3 citations71
US11228844B2Jan 18, 2022
Push-pull electret transducer with controlled restoring force for low frequency microphones and energy harvesting
UNIV JOHNS HOPKINS2 citations62
US9838800B2Dec 5, 2017
PBLG based planar microphones
UNIV JOHNS HOPKINS0 citations48