Inventor · disambiguated record
Toshiaki Koyama
Also filed as: KOYAMA TOSHIAKI
14 granted patents·5 pending applications·772 citations·filing 1988–2013
93Inventor score
Files withHITACHI LTD11KOYAMA TOSHIAKI3MITSUBISHI ELECTRIC CORP3DATA TRON CO LTD1HITACHI INFO & TELECOMM ENG1
Top patents by PatentIndex Score
19 records- 0191US5654957APacket communication systemHITACHI LTD·Filed 1995·Granted Aug 5, 1997·186 cites·18 claims
- 0290US6078583ACommunication method and communication systemHITACHI LTD·Filed 1997·Granted Jun 20, 2000·193 cites·14 claims
- 0388US5434863AInternetworking apparatus for connecting plural network systems and communication network system composed of plural network systems mutually connectedHITACHI LTD·Filed 1992·Granted Jul 18, 1995·165 cites·16 claims
- 0488US5211031AScroll type compressor and refrigeration cycle using the sameHITACHI LTD·Filed 1991·Granted May 18, 1993·85 cites·9 claims
- 0569US9471592B2File management system, method and computer programKOYAMA TOSHIAKI·Filed 2013·Granted Oct 18, 2016·4 cites·13 claims
- 0660US6639863B2Semiconductor integrated circuit device having link elementMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Oct 28, 2003·11 cites·12 claims
- 0756US5905495ACommunication system using electronic mailHITACHI LTD·Filed 1997·Granted May 18, 1999·96 cites·4 claims
- 0853US4849962ACommunications control unitHITACHI LTD·Filed 1988·Granted Jul 18, 1989·17 cites·6 claims
- 0953US2006002379A1Packet communication systemHITACHI LTD·Filed 2005·Application pending·0 cites
- 1051US2011216764A1Packet communication systemHITACHI LTD·Filed 2011·Application pending·0 cites
- 1150US7139265B2Packet communication systemHITACHI LTD·Filed 2003·Granted Nov 21, 2006·0 cites·3 claims
- 1241US5532652AOscillation circuit with enable/disable frequency stabilizationMITSUBISHI ELECTRIC CORP·Filed 1995·Granted Jul 2, 1996·9 cites·15 claims
- 1340US8934610B2File management system, method and computer programKOYAMA TOSHIAKI·Filed 2013·Granted Jan 13, 2015·0 cites·11 claims
- 1439US9400804B2File management system, method and computer programKOYAMA TOSHIAKI·Filed 2013·Granted Jul 26, 2016·0 cites·13 claims
- 1539US2007027572A1Vehicle-mounted information indication device and vehicle information communication system using the sameDATA TRON CO LTD·Filed 2005·Application pending·0 cites
- 1638US2014089353A1File management system and method, and file management programHITACHI INFO & TELECOMM ENG·Filed 2013·Application pending·0 cites
- 1736US6563815B1Packet communication systemHITACHI LTD·Filed 1999·Granted May 13, 2003·3 cites·13 claims
- 1833US5758082AMail terminal equipmentHITACHI LTD·Filed 1996·Granted May 26, 1998·3 cites·46 claims
- 1931US2003080335A1Semiconductor device, and verification method for semiconductor testing apparatus and method using the semiconductor deviceMITSUBISHI ELECTRIC CORP·Filed 2002·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →