Inventor · disambiguated record
Eiichi Amada
Also filed as: AMADA EIICHI · MIYATA MASACHIKA
40 granted patents·1,985 citations·filing 1978–2002
98Inventor score
Top patents by PatentIndex Score
40 records- 0198US5537414AMethod of wireless communication between base station and mobile station and multiple access communication systemHITACHI LTD·Filed 1993·Granted Jul 16, 1996·387 cites·25 claims
- 0292US6256509B1Broadcast information delivering systemHITACHI LTD·Filed 1999·Granted Jul 3, 2001·219 cites·11 claims
- 0390US4305133ARecursive type digital filterHITACHI LTD·Filed 1979·Granted Dec 8, 1981·32 cites·11 claims
- 0489US4223389ARecursive digital filter having means to prevent overflow oscillationHITACHI LTD·Filed 1978·Granted Sep 16, 1980·28 cites·9 claims
- 0587US5862142AFrequency hopping wireless communication system and communication equipmentHITACHI LTD·Filed 1995·Granted Jan 19, 1999·104 cites·15 claims
- 0686US5655219AWireless LAN system capable of re-transmission under management of a base station device to a destination mobile terminal deviceHITACHI LTD·Filed 1994·Granted Aug 5, 1997·165 cites·26 claims
- 0783US6061389AFrequency-hopping communication system and communication stationHITACHI LTD·Filed 1994·Granted May 9, 2000·79 cites·20 claims
- 0882US5559804AWireless communication system and wireless terminal device using fixed length communication frameHITACHI LTD·Filed 1994·Granted Sep 24, 1996·139 cites·7 claims
- 0980US4543652ATime-division switching unitHITACHI LTD·Filed 1983·Granted Sep 24, 1985·31 cites·15 claims
- 1078US5043979ATime-division channel arrangementHITACHI LTD·Filed 1987·Granted Aug 27, 1991·31 cites·12 claims
- 1177US5184346ASwitching systemHITACHI LTD·Filed 1990·Granted Feb 2, 1993·90 cites·21 claims
- 1277US5091905AHigh-speed packet switching using a space division optical switchHITACHI LTD·Filed 1990·Granted Feb 25, 1992·85 cites·55 claims
- 1375US5513177ADistributed switching system having at least one moduleHITACHI LTD·Filed 1991·Granted Apr 30, 1996·41 cites·36 claims
- 1475US5241543AIndependent clocking local area network and nodes used for the sameHITACHI LTD·Filed 1991·Granted Aug 31, 1993·83 cites·18 claims
- 1575US5103447AHigh-speed ring LAN systemHITACHI LTD·Filed 1989·Granted Apr 7, 1992·49 cites·27 claims
- 1673US4633460ATime division switching systemHITACHI LTD·Filed 1984·Granted Dec 30, 1986·21 cites·9 claims
- 1772US5247518AHigh-speed ring lan systemHITACHI LTD·Filed 1992·Granted Sep 21, 1993·49 cites·25 claims
- 1872US5113392ACommunication apparatus for reassembling packets received from network into messageHITACHI LTD·Filed 1990·Granted May 12, 1992·78 cites·8 claims
- 1965US6389025B2Distributed type switching systemHITACHI LTD·Filed 2001·Granted May 14, 2002·5 cites·14 claims
- 2063US6639920B2Distributed type switching systemHITACHI LTD·Filed 2002·Granted Oct 28, 2003·4 cites·6 claims
- 2163US4608464AInterface circuit interconnecting a bidirectional two-wire line with unidirectional four-wire linesNIPPON TELEGRAPH & TELEPHONE·Filed 1984·Granted Aug 26, 1986·23 cites·2 claims
- 2262US4841521AMethod and system for bidirectionally transmitting dataHITACHI LTD·Filed 1987·Granted Jun 20, 1989·25 cites·14 claims
- 2362US4796296APCM coder and decoder having function of two-wire/four-wire conversionHITACHI LTD·Filed 1985·Granted Jan 3, 1989·26 cites·5 claims
- 2460US5740156APacket switching system having self-routing switchesHITACHI LTD·Filed 1991·Granted Apr 14, 1998·37 cites·15 claims
- 2556US5596721AScreen communications system granting screen modifying requests if no other requests received after first period of time and releasing requests after second period of timeHITACHI LTD·Filed 1991·Granted Jan 21, 1997·30 cites·29 claims
- 2656US4665507ASemiconductor memory having load devices controlled by a write signalHITACHI LTD·Filed 1985·Granted May 12, 1987·18 cites·3 claims
- 2754US6314096B1Packet switching system having self-routing switchesHITACHI LTD·Filed 1999·Granted Nov 6, 2001·11 cites·3 claims
- 2853US5734655ADistributed type switching systemHITACHI LTD·Filed 1995·Granted Mar 31, 1998·9 cites·7 claims
- 2951US7058062B2Packet switching system having self-routing switchesHITACHI LTD·Filed 2002·Granted Jun 6, 2006·1 cites·2 claims
- 3049US5197097ACell signal processing circuit and optical switch apparatus using the sameHITACHI LTD·Filed 1991·Granted Mar 23, 1993·15 cites·12 claims
- 3145US6335934B1Distributed type switching systemHITACHI LTD·Filed 1999·Granted Jan 1, 2002·9 cites·6 claims
- 3245US6304570B1Distributed type switching systemHITACHI LTD·Filed 1999·Granted Oct 16, 2001·9 cites·12 claims
- 3344US5995510ADistributed type switching systemHITACHI LTD·Filed 1997·Granted Nov 30, 1999·9 cites·13 claims
- 3443US5999537APacket switching system having self-routing switchesHITACHI LTD·Filed 1997·Granted Dec 7, 1999·5 cites·2 claims
- 3542US4558185ASubscriber line interface circuit with complex impedanceNIPPON TELEGRAPH & TELEPHONE·Filed 1982·Granted Dec 10, 1985·9 cites·8 claims
- 3640US5745495AApparatus for monitoring and controlling autonomous switching of trunk/subscriber lines in a distributed switching systemHITACHI LTD·Filed 1995·Granted Apr 28, 1998·6 cites·6 claims
- 3739US4209771ACode converting method and systemHITACHI LTD·Filed 1978·Granted Jun 24, 1980·7 cites·7 claims
- 3837US6618372B1Packet switching system having-having self-routing switchesHITACHI LTD·Filed 1999·Granted Sep 9, 2003·7 cites·16 claims
- 3933US6005867ATime-division channel arrangementHITACHI LTD·Filed 1995·Granted Dec 21, 1999·3 cites·3 claims
- 4033US5414739ATransmission system constituted of multistage reproduction nodesHITACHI LTD·Filed 1992·Granted May 9, 1995·6 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →