Inventor · disambiguated record
Toru Hirohata
Also filed as: HIROHATA TORU · WARASHINA YOSHIHISA
42 granted patents·7 pending applications·322 citations·filing 1989–2020
97Inventor score
Top patents by PatentIndex Score
49 records- 0196US7816866B2Photocathode comprising a plurality of openings on an electron emission layerHAMAMATSU PHOTONICS KK·Filed 2006·Granted Oct 19, 2010·47 cites·14 claims
- 0280US10228328B2Organic electro-luminescent element and bioinstrumentation deviceUNIV KYUSHU NAT UNIV CORP·Filed 2017·Granted Mar 12, 2019·3 cites·20 claims
- 0380US6917058B2Semiconductor photocathodeHAMAMATSU PHOTONICS KK·Filed 2001·Granted Jul 12, 2005·26 cites·3 claims
- 0477US5591986APhotoemitter electron tube and photodetectorHAMAMATSU PHOTONICS KK·Filed 1994·Granted Jan 7, 1997·26 cites·31 claims
- 0575US9863883B2Surface-enhanced raman scattering elementHAMAMATSU PHOTONICS KK·Filed 2013·Granted Jan 9, 2018·2 cites·8 claims
- 0675US9276144B2Quantum cascade detectorHAMAMATSU PHOTONICS KK·Filed 2014·Granted Mar 1, 2016·1 cites·6 claims
- 0774US8446094B2Photocathode, electron tube, field assist type photocathode, field assist type photocathode array, and field assist type electron tubeNIIGAKI MINORU·Filed 2010·Granted May 21, 2013·3 cites·14 claims
- 0872US5959400AElectron tube having a diamond field emitterHAMAMATSU PHOTONICS KK·Filed 1997·Granted Sep 28, 1999·23 cites·9 claims
- 0971US7795608B2PhotocathodeHAMAMATSU PHOTONICS KK·Filed 2008·Granted Sep 14, 2010·2 cites·4 claims
- 1071US7557336B2Photodetector having first and second antenna areas with patterns having different cycle intervalsHAMAMATSU PHOTONICS KK·Filed 2007·Granted Jul 7, 2009·2 cites·9 claims
- 1171US5986387ATransmission type electron multiplier and electron tube providedHAMAMATSU PHOTONICS KK·Filed 1997·Granted Nov 16, 1999·22 cites·11 claims
- 1271US5471051APhotocathode capable of detecting position of incident light in one or two dimensions, phototube, and photodetecting apparatus containing sameHAMAMATSU PHOTONICS KK·Filed 1994·Granted Nov 28, 1995·23 cites·26 claims
- 1370US7365356B2PhotocathodeHAMAMATSU PHOTONICS KK·Filed 2005·Granted Apr 29, 2008·2 cites·7 claims
- 1470US5982094AElectron tube with polycrystalline diamond photocathodeHAMAMATSU PHOTONICS KK·Filed 1997·Granted Nov 9, 1999·22 cites·10 claims
- 1569US6818885B2PhotodetectorHAMAMATSU PHOTONICS KK·Filed 2003·Granted Nov 16, 2004·15 cites·16 claims
- 1667US7176625B2Photocathode plate and electron tubeHAMAMATSU PHOTONICS KK·Filed 2004·Granted Feb 13, 2007·7 cites·4 claims
- 1766US8853809B2Optical element and photodetectorHAMAMATSU PHOTONICS KK·Filed 2013·Granted Oct 7, 2014·2 cites·24 claims
- 1865US8482197B2Photocathode, electron tube, field assist type photocathode, field assist type photocathode array, and field assist type electron tubeNIIGAKI MINORU·Filed 2007·Granted Jul 9, 2013·1 cites·11 claims
- 1962US6563264B2Photocathode and electron tubeHAMAMATSU PHOTONICS KK·Filed 2001·Granted May 13, 2003·5 cites·4 claims
- 2059US7002132B2Photocathode, electron tube, and method of assembling photocathodeHAMAMATSU PHOTONICS KK·Filed 2003·Granted Feb 21, 2006·4 cites·9 claims
- 2159US6002141AMethod of using photocathode and method of using electron tubeHAMAMATSU PHOTONICS KK·Filed 1995·Granted Dec 14, 1999·14 cites·17 claims
- 2259US5336902ASemiconductor photo-electron-emitting deviceHAMAMATSU PHOTONICS KK·Filed 1992·Granted Aug 9, 1994·15 cites·18 claims
- 2358US5710435APhotomultiplier having a photocathode comprised of semiconductor materialHAMAMATSU PHOTONICS KK·Filed 1995·Granted Jan 20, 1998·13 cites·23 claims
- 2458US2014319637A1PhotodetectorHAMAMATSU PHOTONICS KK·Filed 2014·Application pending·0 cites
- 2557US2015097156A1PhotodetectorHAMAMATSU PHOTONICS KK·Filed 2013·Application pending·0 cites
- 2657US2015053922A1PhotodetectorHAMAMATSU PHOTONICS KK·Filed 2013·Application pending·0 cites
- 2756US5680007APhotomultiplier having a photocathode comprised of a compound semiconductor materialHAMAMATSU PHOTONICS KK·Filed 1995·Granted Oct 21, 1997·12 cites·25 claims
- 2855US6903363B2PhotocathodeHAMAMATSU PHOTONICS KK·Filed 2003·Granted Jun 7, 2005·2 cites·1 claims
- 2955US5982093APhotocathode and electron tube having enhanced absorption edge characteristicsHAMAMATSU PHOTONICS KK·Filed 1997·Granted Nov 9, 1999·12 cites·13 claims
- 3054US11925046B2Light-emitting device, light-emitting method, and organic light-emitting elementUNIV KYUSHU NAT UNIV CORP·Filed 2020·Granted Mar 5, 2024·0 cites·7 claims
- 3152US10132755B2Surface-enhanced Raman scattering element, and method for manufacturing surface-enhanced Raman scattering elementHAMAMATSU PHOTONICS KK·Filed 2013·Granted Nov 20, 2018·0 cites·11 claims
- 3251US2008121928A1Semiconductor photocathodeHAMAMATSU PHOTONICS KK·Filed 2007·Application pending·0 cites
- 3351US2009273281A1Photocathode and electron tube having the sameHAMAMATSU PHOTONICS KK·Filed 2009·Application pending·0 cites
- 3450US9863884B2Surface-enhanced Raman scattering element, and method for producing sameHAMAMATSU PHOTONICS KK·Filed 2013·Granted Jan 9, 2018·0 cites·5 claims
- 3550US9368661B2PhotodetectorHAMAMATSU PHOTONICS KK·Filed 2013·Granted Jun 14, 2016·0 cites·7 claims
- 3649US9976961B2Surface-enhanced raman scattering element including a conductor layer having a base part and a plurality of protusionsHAMAMATSU PHOTONICS KK·Filed 2013·Granted May 22, 2018·0 cites·8 claims
- 3748US9874523B2Surface-enhanced Raman scattering element including a conductor layer having a base part and a plurality of protusionsHAMAMATSU PHOTONICS KK·Filed 2013·Granted Jan 23, 2018·0 cites·9 claims
- 3847US11444248B2Organic electro-luminescent element and bioinstrumentation deviceUNIV KYUSHU NAT UNIV CORP·Filed 2017·Granted Sep 13, 2022·0 cites·10 claims
- 3945US2008121909A1Semiconductor deviceHAMAMATSU PHOTONICS KK·Filed 2007·Application pending·0 cites
- 4042US2020395501A1Superluminescent diodeHAMAMATSU PHOTONICS KK·Filed 2018·Application pending·0 cites
- 4141US10840406B2Optical semiconductor element and method of driving optical semiconductor elementHAMAMATSU PHOTONICS KK·Filed 2018·Granted Nov 17, 2020·0 cites·10 claims
- 4241US10238290B2Probe for bioinstrumentation and bioinstrumentation deviceHAMAMATSU PHOTONICS KK·Filed 2015·Granted Mar 26, 2019·0 cites·6 claims
- 4341US5747826APhotoemitter electron tube, and photodetectorHAMAMATSU PHOTONICS KK·Filed 1996·Granted May 5, 1998·4 cites·22 claims
- 4438US5020064AElectromagnetic wave deviceHAMAMATSU PHOTONICS KK·Filed 1989·Granted May 28, 1991·4 cites·11 claims
- 4536US5051573AOptical logic operation systemHAMAMATSU PHOTONICS KK·Filed 1989·Granted Sep 24, 1991·3 cites·6 claims
- 4631US5068815AOptical full adderHAMAMATSU PHOTONICS KK·Filed 1990·Granted Nov 26, 1991·3 cites·8 claims
- 4730US5109358AOptical flip-flop circuitHAMAMATSU PHOTONICS KK·Filed 1989·Granted Apr 28, 1992·1 cites·8 claims
- 4830US5034921AHigh speed optical memory circuitHAMAMATSU PHOTONICS KK·Filed 1989·Granted Jul 23, 1991·1 cites·5 claims
- 4927US5138191APhotoemitterHAMAMATSU PHOTONICS KK·Filed 1990·Granted Aug 11, 1992·0 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →