Inventor · disambiguated record
Tomokazu Katsuyama
Also filed as: KATSUYAMA TOMOKAZU
15 granted patents·26 citations·filing 2003–2020
88Inventor score
Top patents by PatentIndex Score
15 records- 0177US8637337B2Method for producing integrated optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Jan 28, 2014·4 cites·14 claims
- 0272US7678594B2Integrated optical device and fabrication method thereofSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Mar 16, 2010·4 cites·5 claims
- 0368US8021985B2Method to form semiconductor laser diodeSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Sep 20, 2011·2 cites·18 claims
- 0464US7998770B2Method for forming a semiconductor light-emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2008·Granted Aug 16, 2011·2 cites·10 claims
- 0563US7816157B2Method of producing semiconductor optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2009·Granted Oct 19, 2010·2 cites·16 claims
- 0662US7723138B2Method of fabricating a semiconductor optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted May 25, 2010·2 cites·19 claims
- 0760US9235002B2Integrated semiconductor deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Granted Jan 12, 2016·1 cites·9 claims
- 0859US11126021B2Semiconductor optical device and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2020·Granted Sep 21, 2021·0 cites·9 claims
- 0959US8741670B2Method for producing integrated optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Jun 3, 2014·1 cites·7 claims
- 1059US8637338B2Method for producing integrated optical deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Jan 28, 2014·1 cites·5 claims
- 1150US6791159B2Optical moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Sep 14, 2004·4 cites·9 claims
- 1247US7196909B2AC coupling circuit having a large capacitance and a good frequency responseSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Mar 27, 2007·3 cites·6 claims
- 1346US7627009B2Light-emitting device on n-type InP substrate heavily doped with sulfurSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Dec 1, 2009·0 cites·10 claims
- 1440US9341772B2Integrated semiconductor deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Granted May 17, 2016·0 cites·8 claims
- 1528US8227275B2Method to form semiconductor laser diode with mesa structure buried by current blocking layerKATSUYAMA TOMOKAZU·Filed 2010·Granted Jul 24, 2012·0 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Tomokazu Katsuyama 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 →