Inventor
ALLIE MARK C
US17 patents
⚠️ This page may combine multiple inventors who share the name “ALLIE MARK C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NELSON IND INC
10 patentsUS5033082AJul 16, 1991
Communication system with active noise cancellation
NELSON IND INC122 citations97
US5022082AJun 4, 1991
Active acoustic attenuation system with reduced convergence time
NELSON IND INC61 citations96
US4837834AJun 6, 1989
Active acoustic attenuation system with differential filtering
NELSON IND INC82 citations96
US4665549AMay 12, 1987
Hybrid active silencer
NELSON IND INC139 citations96
US4815139AMar 21, 1989
Active acoustic attenuation system for higher order mode non-uniform sound field in a duct
NELSON IND INC82 citations95
US5396561AMar 7, 1995
Active acoustic attenuation and spectral shaping system
NELSON IND INC30 citations92
US5206911AApr 27, 1993
Correlated active attenuation system with error and correction signal input
NELSON IND INC27 citations92
US5172416ADec 15, 1992
Active attenuation system with specified output acoustic wave
NELSON IND INC37 citations92
US4736431AApr 5, 1988
Active attenuation system with increased dynamic range
NELSON IND INC85 citations91
US4811309AMar 7, 1989
Microphone probe for acoustic measurement in turbulent flow
NELSON IND INC13 citations72
DIGISONIX INC
4 patentsUS5715320AFeb 3, 1998
Active adaptive selective control system
DIGISONIX INC64 citations95
US5386477AJan 31, 1995
Active acoustic control system matching model reference
DIGISONIX INC51 citations91
US5586189ADec 17, 1996
Active adaptive control system with spectral leak
DIGISONIX INC16 citations73
US5627747AMay 6, 1997
System for developing and operating an active sound and vibration control system
DIGISONIX INC17 citations71