Inventor · disambiguated record
Kazumi Kawamoto
Also filed as: KAWAMOTO KAZUMI
30 granted patents·497 citations·filing 1988–2005
97Inventor score
Top patents by PatentIndex Score
30 records- 0192US5070488AOptical integrated circuit and optical apparatusFUKUSHIMA ATSUKO·Filed 1989·Granted Dec 3, 1991·108 cites·24 claims
- 0285US6985659B2Optical transmission moduleOPNEXT JAPAN INC·Filed 2003·Granted Jan 10, 2006·33 cites·14 claims
- 0383US6597712B2Laser diode moduleHITACHI LTD·Filed 2001·Granted Jul 22, 2003·20 cites·10 claims
- 0481US7177549B2High-frequency transmission line and an optical module incorporating the same lineOPNEXT JAPAN INC·Filed 2002·Granted Feb 13, 2007·16 cites·4 claims
- 0580US5125740AMethod and apparatus for measuring optical constants of a thin film as well as method and apparatus for fabricating a thin film utilizing sameHITACHI LTD·Filed 1990·Granted Jun 30, 1992·54 cites·13 claims
- 0676US6813419B2Optical transmission module and optical communication system using the sameHITACHI LTD·Filed 2001·Granted Nov 2, 2004·17 cites·21 claims
- 0775US6937799B2Optical transmission module and optical communication system using the sameHITACHI LTD·Filed 2001·Granted Aug 30, 2005·16 cites·18 claims
- 0872US7215886B2Optical communication moduleHITACHI LTD·Filed 2002·Granted May 8, 2007·23 cites·12 claims
- 0972US6937406B2Optical module and method for manufacturing optical moduleOPNEXT JAPAN INC·Filed 2003·Granted Aug 30, 2005·14 cites·11 claims
- 1072US5854870AShort-wavelength laser light sourceHITACHI LTD·Filed 1993·Granted Dec 29, 1998·37 cites·34 claims
- 1169US7412120B2Optical module and optical transmission apparatusOPNEXT JAPAN INC·Filed 2005·Granted Aug 12, 2008·5 cites·5 claims
- 1265US6813102B2Optical module with a monitor photo diodeOPNEXT JAPAN INC·Filed 2002·Granted Nov 2, 2004·12 cites·7 claims
- 1364US5195070AOptical information processing apparatus and optical pickup thereforHITACHI LTD·Filed 1990·Granted Mar 16, 1993·15 cites·48 claims
- 1463US6289157B1Optical wave-guide, light-beam spot converter and optical transmission moduleHITACHI LTD·Filed 2000·Granted Sep 11, 2001·7 cites·16 claims
- 1562US6661503B1Method for manufacturing optic transmission modules and system for inspecting bit error rate charactersHITACHI LTD·Filed 1998·Granted Dec 9, 2003·26 cites·16 claims
- 1662US5274727ASecond harmonic generator and method of fabrication thereofHITACHI LTD·Filed 1992·Granted Dec 28, 1993·25 cites·16 claims
- 1759US6501891B2Optical wave-guide, light-beam spot converter and optical transmission moduleHITACHI LTD·Filed 2001·Granted Dec 31, 2002·5 cites·12 claims
- 1857US5191624AOptical information storing apparatus and method for production of optical deflectorHITACHI LTD·Filed 1991·Granted Mar 2, 1993·22 cites·18 claims
- 1955US7037000B2Optical transmission moduleOPNEXT JAPAN INC·Filed 2003·Granted May 2, 2006·4 cites·6 claims
- 2054US7027674B2Optical module and optical transmission apparatusOPNEXT JAPAN INC·Filed 2003·Granted Apr 11, 2006·4 cites·17 claims
- 2154US6912363B2Optical module which permits stable laser outputOPNEXT JAPAN INC·Filed 2001·Granted Jun 28, 2005·4 cites·20 claims
- 2253US6805496B2Optical communication module, manufacturing method thereof and wavelength selective filterOPNEXT JAPAN INC·Filed 2002·Granted Oct 19, 2004·5 cites·15 claims
- 2352US6635971B2Electronic device and optical transmission moduleHITACHI LTD·Filed 2002·Granted Oct 21, 2003·6 cites·6 claims
- 2449US4906063AWave guide type optical device and method of fabricating the sameHITACHI LTD·Filed 1988·Granted Mar 6, 1990·13 cites·16 claims
- 2546US6856442B2Transmission line, optical module using the same and manufacturing method of optical moduleOPNEXT JAPAN INC·Filed 2003·Granted Feb 15, 2005·2 cites·10 claims
- 2644US7044652B2Optical transmission moduleOPNEXT JAPAN INC·Filed 2002·Granted May 16, 2006·1 cites·29 claims
- 2740US6983000B2Laser diode moduleHITACHI LTD·Filed 2003·Granted Jan 3, 2006·0 cites·8 claims
- 2839US6864511B2Optical transmission module and the production method of the sameOPNEXT JAPAN INC·Filed 2002·Granted Mar 8, 2005·0 cites·14 claims
- 2932US5187756ASurface acoustic waveguide device and manufacturing methodHITACHI LTD·Filed 1991·Granted Feb 16, 1993·3 cites·11 claims
- 3029US6822271B2Semiconductor photodetector and optical transmitting deviceHITACHI LTD·Filed 1998·Granted Nov 23, 2004·0 cites·18 claims
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