Inventor · disambiguated record
Katsuhiko Kurumada
Also filed as: KURUMADA KATSUHIKO
9 granted patents·70 citations·filing 1980–2005
85Inventor score
Top patents by PatentIndex Score
9 records- 0167US4463366AField effect transistor with combination Schottky-junction gateNIPPON TELEGRAPH & TELEPHONE·Filed 1980·Granted Jul 31, 1984·22 cites·3 claims
- 0257US5155737ASemiconductor wavelength conversion deviceNIPPON TELEGRAPH & TELEPHONE·Filed 1991·Granted Oct 13, 1992·26 cites·21 claims
- 0353US4327475AMethod of manufacturing a FET device disposed in a compound s/c layer on a semi-insulating substrateNIPPON TELEGRAPH & TELEPHONE·Filed 1980·Granted May 4, 1982·13 cites·6 claims
- 0451US7082251B2Optical deviceNIKON CORP·Filed 2003·Granted Jul 25, 2006·3 cites·3 claims
- 0543US7006722B2Waveguide type optical device and position detecting methodNIKON CORP·Filed 2003·Granted Feb 28, 2006·2 cites·7 claims
- 0640US6954562B2Matrix switch of optical waveguide type and method for manufacturing the sameNTT ELECTRONICS CORP·Filed 2004·Granted Oct 11, 2005·0 cites·4 claims
- 0739US7092593B2Microactuator device and optical switching system using the sameNTT ELECTRONICS CORP·Filed 2005·Granted Aug 15, 2006·0 cites·20 claims
- 0838US7010200B2Light-beam switching/adjusting apparatus and manufacturing method thereofNTT ELECTRONICS CORP·Filed 2002·Granted Mar 7, 2006·0 cites·22 claims
- 0933US4331967AField effects semiconductor devicesNIPPON TELEGRAPH & TELEPHONE·Filed 1980·Granted May 25, 1982·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →