Inventor · disambiguated record
Maki Hiraizumi
Also filed as: HIRAIZUMI MAKI
10 granted patents·3 pending applications·102 citations·filing 1993–2012
90Inventor score
Top patents by PatentIndex Score
13 records- 0190US7123404B1Optical amplifier and optical amplification methodFUJITSU LTD·Filed 2005·Granted Oct 17, 2006·23 cites·14 claims
- 0289US8564876B2Raman amplifier and raman amplifier adjustment methodHIRAIZUMI MAKI·Filed 2012·Granted Oct 22, 2013·8 cites·3 claims
- 0385US8339698B2Raman amplifier and raman amplifier adjustment methodHIRAIZUMI MAKI·Filed 2010·Granted Dec 25, 2012·5 cites·7 claims
- 0485US8213078B2Raman amplifier and raman amplifier adjustment methodHIRAIZUMI MAKI·Filed 2010·Granted Jul 3, 2012·5 cites·5 claims
- 0582US7554721B2Raman amplifier and Raman amplifier adjustment methodFUJITSU LTD·Filed 2004·Granted Jun 30, 2009·13 cites·9 claims
- 0679US8588609B2Wavelength division multiplexing transmission system and apparatus and optical signal noise ratio calculation methodHIRAIZUMI MAKI·Filed 2009·Granted Nov 19, 2013·8 cites·14 claims
- 0761US5939920AMethod and apparatus which adds distortion to a signal to compensate for distortion added at a later stage by a nonlinear elementFUJITSU LTD·Filed 1996·Granted Aug 17, 1999·21 cites·29 claims
- 0855US7058298B2Optical transmission device and optical transmission systemFUJITSU LTD·Filed 2002·Granted Jun 6, 2006·4 cites·5 claims
- 0955US2009153951A1Raman amplifier and raman amplifier adjustment methodFUJITSU LTD·Filed 2009·Application pending·0 cites
- 1044US5793411AVideo-on-demand systemFUJITSU LTD·Filed 1996·Granted Aug 11, 1998·11 cites·7 claims
- 1138US2002105693A1Optical transmission unit and systemFUJITSU LTD·Filed 2002·Application pending·0 cites
- 1234US2002093716A1Optical heterodyne frequency modulatorFiled 2001·Application pending·0 cites
- 1330US5550977AMulti-media mailing method and apparatusFUJITSU LTD·Filed 1993·Granted Aug 27, 1996·4 cites·11 claims
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