Assignee
NICHIA KAGAKU KOGYO KK
JP·58 granted patents·2 pending applications·6,403 citations·filing 1987–2005
Top patents by PatentIndex Score
60 records- 0199US5578839ALight-emitting gallium nitride-based compound semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 1993·Granted Nov 26, 1996·429 cites·39 claims
- 0299US5563422AGallium nitride-based III-V group compound semiconductor device and method of producing the sameNICHIA KAGAKU KOGYO KK·Filed 1994·Granted Oct 8, 1996·440 cites·49 claims
- 0398US7211822B2Nitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 2005·Granted May 1, 2007·55 cites·7 claims
- 0498US6172382B1Nitride semiconductor light-emitting and light-receiving devicesNICHIA KAGAKU KOGYO KK·Filed 1998·Granted Jan 9, 2001·501 cites·7 claims
- 0598US6153010AMethod of growing nitride semiconductors, nitride semiconductor substrate and nitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 1998·Granted Nov 28, 2000·872 cites·30 claims
- 0698US5959307ANitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Sep 28, 1999·319 cites·38 claims
- 0798US5777350ANitride semiconductor light-emitting deviceNICHIA KAGAKU KOGYO KK·Filed 1995·Granted Jul 7, 1998·474 cites·21 claims
- 0898US5767581AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Jun 16, 1998·171 cites·37 claims
- 0998US5747832ALight-emitting gallium nitride-based compound semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 1996·Granted May 5, 1998·173 cites·9 claims
- 1098US5652434AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Jul 29, 1997·184 cites·12 claims
- 1198US5306662AMethod of manufacturing P-type compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1992·Granted Apr 26, 1994·304 cites·8 claims
- 1298US5290393ACrystal growth method for gallium nitride-based compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1992·Granted Mar 1, 1994·457 cites·16 claims
- 1397US5877558AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1997·Granted Mar 2, 1999·140 cites·5 claims
- 1497US5734182ALight-emitting gallium nitride-based compound semiconducor deviceNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Mar 31, 1998·115 cites·9 claims
- 1596US6756611B2Nitride semiconductor growth method, nitride semiconductor substrate, and nitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 2002·Granted Jun 29, 2004·87 cites·11 claims
- 1694US6677619B1Nitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 2000·Granted Jan 13, 2004·91 cites·8 claims
- 1794US6215133B1Light-emitting gallium nitride-based compound semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 1999·Granted Apr 10, 2001·73 cites·13 claims
- 1894US6204512B1Gallium nitride-based III-V group compound semiconductor device and method of producing the sameNICHIA KAGAKU KOGYO KK·Filed 1999·Granted Mar 20, 2001·72 cites·13 claims
- 1994US6093965AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1998·Granted Jul 25, 2000·76 cites·26 claims
- 2094US5880486ALight-emitting gallium nitride-based compound semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Mar 9, 1999·80 cites·8 claims
- 2194US5468678AMethod of manufacturing P-type compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1994·Granted Nov 21, 1995·132 cites·8 claims
- 2294US5433169AMethod of depositing a gallium nitride-based III-V group compound semiconductor crystal layerNICHIA KAGAKU KOGYO KK·Filed 1994·Granted Jul 18, 1995·99 cites·13 claims
- 2393US7615804B2Superlattice nitride semiconductor LD deviceNICHIA KAGAKU KOGYO KK·Filed 2005·Granted Nov 10, 2009·19 cites·20 claims
- 2493US5376303ALong Decay phoaphorsNICHIA KAGAKU KOGYO KK·Filed 1994·Granted Dec 27, 1994·121 cites·21 claims
- 2590US7154128B2Nitride semiconductor growth method, nitride semiconductor substrate, and nitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 2005·Granted Dec 26, 2006·10 cites·21 claims
- 2689US6507041B2Gallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 2001·Granted Jan 14, 2003·29 cites·6 claims
- 2788US6849864B2Nitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 2003·Granted Feb 1, 2005·42 cites·20 claims
- 2887US6580099B2Nitride semiconductor light-emitting devicesNICHIA KAGAKU KOGYO KK·Filed 2001·Granted Jun 17, 2003·52 cites·4 claims
- 2987US6469323B1Light-emitting gallium nitride-based compound semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 2000·Granted Oct 22, 2002·15 cites·8 claims
- 3087US5049779APhosphor composition used for fluorescent lamp and fluorescent lamp using the sameNICHIA KAGAKU KOGYO KK·Filed 1989·Granted Sep 17, 1991·46 cites·12 claims
- 3185US6078063ALight-emitting gallium nitride-based compound semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 1998·Granted Jun 20, 2000·37 cites·4 claims
- 3284US6940103B2Nitride semiconductor growth method, nitride semiconductor substrate and nitride semiconductor deviceNICHIA KAGAKU KOGYO KK·Filed 2003·Granted Sep 6, 2005·19 cites·11 claims
- 3384US5859496ALamp containing long decay phosphorNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Jan 12, 1999·71 cites·12 claims
- 3483US5417886APhosphor coating composition, and discharge lampNICHIA KAGAKU KOGYO KK·Filed 1993·Granted May 23, 1995·57 cites·9 claims
- 3583US4890033ALight-emitting composition and fluorescent lampNICHIA KAGAKU KOGYO KK·Filed 1988·Granted Dec 26, 1989·37 cites·8 claims
- 3680US5008789AFluorescent lamp having ultraviolet reflecting layerNICHIA KAGAKU KOGYO KK·Filed 1990·Granted Apr 16, 1991·48 cites·4 claims
- 3778US4982314APower source circuit apparatus for electro-luminescence deviceNICHIA KAGAKU KOGYO KK·Filed 1989·Granted Jan 1, 1991·40 cites·8 claims
- 3876US4829188APhosphor materials for radiation intensifying screens and radiation intensifying screens containing the phosphor materialsNICHIA KAGAKU KOGYO KK·Filed 1987·Granted May 9, 1989·35 cites·13 claims
- 3971US5330791AMethod of reclaiming phosphorNICHIA KAGAKU KOGYO KK·Filed 1993·Granted Jul 19, 1994·33 cites·6 claims
- 4070US5433888APhosphor composition, phosphor-coating composition, discharge lamp and preparation method thereofNICHIA KAGAKU KOGYO KK·Filed 1993·Granted Jul 18, 1995·20 cites·2 claims
- 4168US5438198AInfrared-to-visible converterNICHIA KAGAKU KOGYO KK·Filed 1994·Granted Aug 1, 1995·46 cites·9 claims
- 4268US4855118AMethod of producing fluorapatiteNICHIA KAGAKU KOGYO KK·Filed 1988·Granted Aug 8, 1989·24 cites·3 claims
- 4367US5250366APhosphor which emits light by the excitation of X-ray, and a X-ray intensifying screen using the phosphorNICHIA KAGAKU KOGYO KK·Filed 1992·Granted Oct 5, 1993·24 cites·6 claims
- 4465US5523018APhosphor composition, phosphor-coating composition, discharge lamp, and preparation method thereofNICHIA KAGAKU KOGYO KK·Filed 1995·Granted Jun 4, 1996·22 cites·8 claims
- 4564US4959174APhosphor which emits light by the excitation of X-rayNICHIA KAGAKU KOGYO KK·Filed 1989·Granted Sep 25, 1990·20 cites·1 claims
- 4663US5041334APigment-attached phosphorNICHIA KAGAKU KOGYO KK·Filed 1989·Granted Aug 20, 1991·16 cites·11 claims
- 4762US5185207APhosphor for cathode ray tube and surface treatment method for the phosphorNICHIA KAGAKU KOGYO KK·Filed 1991·Granted Feb 9, 1993·20 cites·6 claims
- 4861US5366834AMethod of manufacturing a cathode ray tube phosphor screenNICHIA KAGAKU KOGYO KK·Filed 1993·Granted Nov 22, 1994·19 cites·16 claims
- 4961US5120619AX-ray phosphors and X-ray intensifying screen using the phosphorNICHIA KAGAKU KOGYO KK·Filed 1990·Granted Jun 9, 1992·20 cites·11 claims
- 5056US5343316APhosphor for use in a cathode-ray tube and display device using oneNICHIA KAGAKU KOGYO KK·Filed 1993·Granted Aug 30, 1994·15 cites·15 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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