NEC

Patents in grey text have expired

HIMPP #NEC-01: Title: Hearing aid system using directivity microphone array
JP3045149

HIMPP #NEC-02: Title: Digital hearing aid
US6023517
Patent family: JP3165044

HIMPP #NEC-03: Title: Digital hearing aid
US5838801
Patent family: JP2904272

HIMPP #NEC-04: Title: Digital hearing aid and its hearing sense compensation processing method
US6094489
Patent family: JP2953397

HIMPP #NEC-05: Title: Digital hearing aid
US5892836
Patent family: JP2970498

HIMPP #NEC-06: Title: Digitally programmable hearing aid communicable with external apparatus through acoustic signal
US5910997
Patent family: JP2763022

HIMPP#NEC-07: Title: History holding type hearing aid
JP 2638563

HIMPP #NEC-08: Title: Hearing aid system
US5835610
Patent family: JP2982672

HIMPP #NEC-09: Title: Hearing aid for controlling hearing sense compensation with suitable parameters internally tailored
US5852668

HIMPP #NEC-10: Title: Hearing aid
US6330339