Inventor · disambiguated record
Toru Kazawa
Also filed as: KAZAWA TORU
13 granted patents·169 citations·filing 1993–2006
93Inventor score
Top patents by PatentIndex Score
13 records- 0186US5555477AOptical transmission system constructing method and systemHITACHI LTD·Filed 1993·Granted Sep 10, 1996·48 cites·5 claims
- 0275US7616567B2Shaping apparatus, communication node and flow control method for controlling bandwidth of variable length framesHITACHI COMM TECH LTD·Filed 2005·Granted Nov 10, 2009·7 cites·9 claims
- 0371US6728489B2Optical transmission system constructing method and systemHITACHI LTD·Filed 2001·Granted Apr 27, 2004·6 cites·5 claims
- 0471US5812289AOptical repeater and optical transmitterHITACHI LTD·Filed 1996·Granted Sep 22, 1998·23 cites·26 claims
- 0567US7292785B2Optical transmission system constructing method and systemHITACHI LTD·Filed 2006·Granted Nov 6, 2007·2 cites·2 claims
- 0667US6266169B1Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signalHITACHI LTD·Filed 1999·Granted Jul 24, 2001·21 cites·4 claims
- 0758US6005699AOptical wavelength multiplexing systemHITACHI LTD·Filed 1997·Granted Dec 21, 1999·21 cites·17 claims
- 0858US5861972AOptical multiplex transmission equipment and methodHITACHI LTD·Filed 1996·Granted Jan 19, 1999·12 cites·37 claims
- 0954US7167652B2Optical transmission system constructing method and systemHITACHI LTD·Filed 2004·Granted Jan 23, 2007·1 cites·3 claims
- 1051US5875046AOptical repeater and optical transmitterHITACHI LTD·Filed 1996·Granted Feb 23, 1999·9 cites·12 claims
- 1149US5739932AOptical transmission system constructing method and systemHITACHI LTD·Filed 1996·Granted Apr 14, 1998·8 cites·6 claims
- 1248US6018405AOptical transmission equipment which transmits an amplified optical data signal and an optical surveillance signalHITACHI LTD·Filed 1999·Granted Jan 25, 2000·7 cites·2 claims
- 1338US5671074AOptical multiplex transmission equipment and methodHITACHI LTD·Filed 1996·Granted Sep 23, 1997·4 cites·8 claims
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