Inventor · disambiguated record
Eisaku Touma
Also filed as: TOUMA EISAKU
8 granted patents·1 pending application·255 citations·filing 1997–2008
87Inventor score
Files withFUJITSU LTD9
Top patents by PatentIndex Score
9 records- 0188US6108112AMethod and apparatus for failure recovery in passive optical networkFUJITSU LTD·Filed 1997·Granted Aug 22, 2000·124 cites·8 claims
- 0283US6819875B2Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatusFUJITSU LTD·Filed 2002·Granted Nov 16, 2004·27 cites·16 claims
- 0377US7099595B2Optical wavelength multiplexing transmission apparatus and optical output control method for optical wavelength multiplexing transmission apparatusFUJITSU LTD·Filed 2004·Granted Aug 29, 2006·17 cites·7 claims
- 0474US6288809B1Optical subscriber network systemFUJITSU LTD·Filed 1998·Granted Sep 11, 2001·43 cites·12 claims
- 0572US6288806B1Optical subscriber network system and fault supervising method for optical subscriber network systemFUJITSU LTD·Filed 1998·Granted Sep 11, 2001·43 cites·23 claims
- 0649US7952994B2Redundancy method and switch apparatusFUJITSU LTD·Filed 2008·Granted May 31, 2011·0 cites·7 claims
- 0746US7206512B2Method of controlling optical wavelength division multiplexing transmission apparatusFUJITSU LTD·Filed 2004·Granted Apr 17, 2007·1 cites·7 claims
- 0843US7283742B2Optical signal judging system and optical signal judging methodFUJITSU LTD·Filed 2004·Granted Oct 16, 2007·0 cites·4 claims
- 0942US2005207753A1Optical protection apparatusFUJITSU LTD·Filed 2004·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →