Inventor · disambiguated record
Rikio Maruta
Also filed as: MARUTA RIKIO · NISHITANI TAKAO
12 granted patents·243 citations·filing 1976–1990
92Inventor score
Top patents by PatentIndex Score
12 records- 0193US4097860AOffset compensating circuitNIPPON ELECTRIC CO·Filed 1977·Granted Jun 27, 1978·47 cites·9 claims
- 0289US4107470ADigital SSB-FDM communication system derived from a complex band-pass digital filter bank and by a filter breakdown processNIPPON ELECTRIC CO·Filed 1977·Granted Aug 15, 1978·48 cites·10 claims
- 0369US4554670ASystem and method for ADPCM transmission of speech or like signalsNEC CORP·Filed 1983·Granted Nov 19, 1985·21 cites·14 claims
- 0467US4048447APCM-TASI signal transmission systemNIPPON ELECTRIC CO·Filed 1976·Granted Sep 13, 1977·17 cites·7 claims
- 0564US4684925AMethod and apparatus for converting an analog signal to a digital signal using an oversampling techniqueNEC CORP·Filed 1985·Granted Aug 4, 1987·19 cites·5 claims
- 0662US4392234APCM Signal interface apparatusNIPPON ELECTRIC CO·Filed 1981·Granted Jul 5, 1983·16 cites·5 claims
- 0761US4935921ACross-connection network using time switchNEC CORP·Filed 1987·Granted Jun 19, 1990·27 cites·14 claims
- 0860US4164021A2M-point discrete Fourier transform calculator comprising a pre-processor for twice performing extraction of conjugate symmetric and/or antisymmetric componentsNIPPON ELECTRIC CO·Filed 1977·Granted Aug 7, 1979·22 cites·3 claims
- 0947US4099029AAsynchronous pcm common decoding apparatusNIPPON ELECTRIC CO·Filed 1977·Granted Jul 4, 1978·7 cites·11 claims
- 1045US4393367ADigital compandor having nonlinear companding characteristicsNIPPON ELECTRIC CO·Filed 1979·Granted Jul 12, 1983·4 cites·2 claims
- 1142US5144620ACross-connection network using time switchNEC CORP·Filed 1990·Granted Sep 1, 1992·12 cites·2 claims
- 1240US4467315ADigital compandor having nonlinear companding characteristicsNIPPON ELECTRIC CO·Filed 1978·Granted Aug 21, 1984·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →