Inventor · disambiguated record
Tatsuo Nagayoshi
Also filed as: NAGAYOSHI TATSUO
10 granted patents·2 pending applications·94 citations·filing 1980–2016
88Inventor score
Top patents by PatentIndex Score
12 records- 0189US6868200B2Wavelength division multiplexing optical transmission apparatusFUJITSU LTD·Filed 2002·Granted Mar 15, 2005·47 cites·12 claims
- 0277US7343102B2Optical transmission system with automatic signal level adjustment and startup functionsFUJITSU LTD·Filed 2004·Granted Mar 11, 2008·16 cites·22 claims
- 0372US7509055B2Optical transmission system with automatic signal level adjustment and startup functionsFUJITSU LTD·Filed 2008·Granted Mar 24, 2009·4 cites·2 claims
- 0469US7630644B2Optical add/drop multiplexer, control method therefor and control program thereforFUJITSU LTD·Filed 2006·Granted Dec 8, 2009·4 cites·13 claims
- 0568US9800331B2Optical transmission apparatus and level adjusting methodFUJITSU LTD·Filed 2016·Granted Oct 24, 2017·2 cites·12 claims
- 0666US8189180B2Optical fiber transmission line measurement apparatus and systemBATO KOJI·Filed 2009·Granted May 29, 2012·5 cites·10 claims
- 0765US8195052B2Optical wavelength multiplexing system, optical wavelength multiplexing method, and computer productOHTOU MAKOTO·Filed 2007·Granted Jun 5, 2012·4 cites·9 claims
- 0856US7733467B2Optical passive device product identification apparatus and connectivity determination apparatusFUJITSU LTD·Filed 2008·Granted Jun 8, 2010·2 cites·4 claims
- 0940US4385473AMethod for frequency regulation of tuning-fork vibratorHOSIDEN ELECTRONICS CO·Filed 1980·Granted May 31, 1983·6 cites·11 claims
- 1037US2014212133A1Control device for optical channel monitor, optical transmission device, and method of controlling optical channel monitorFUJITSU LTD·Filed 2013·Application pending·0 cites
- 1132US4382659ALiquid crystal display deviceHOSIDEN ELECTRONICS CO·Filed 1980·Granted May 10, 1983·4 cites·9 claims
- 1229US2017104530A1Transmission apparatus and method for confirming connection of optical fiberFUJITSU LTD·Filed 2016·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Tatsuo Nagayoshi files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →