Inventor · disambiguated record
Ayumu Tsujimura
Also filed as: TSUJIMURA AYUMU
24 granted patents·680 citations·filing 1993–2014
97Inventor score
Top patents by PatentIndex Score
24 records- 0196US6720586B1Method of fabricating nitride semiconductor, method of fabricating nitride semiconductor device, nitride semiconductor device, semiconductor light emitting device and method of fabricating the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Apr 13, 2004·98 cites·4 claims
- 0295US5499260ASemiconductor laser and a method for fabricating the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Mar 12, 1996·103 cites·29 claims
- 0392US6614059B1Semiconductor light-emitting device with quantum wellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Sep 2, 2003·91 cites·5 claims
- 0490US7160748B2Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Jan 9, 2007·13 cites·11 claims
- 0589US6392979B1Optical pickup and optical disk apparatus using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted May 21, 2002·56 cites·9 claims
- 0683US6030849AMethods of manufacturing semiconductor, semiconductor device and semiconductor substrateMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Feb 29, 2000·66 cites·23 claims
- 0782US6586774B2Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jul 1, 2003·21 cites·6 claims
- 0881US6911351B2Method of fabricating nitride semiconductor, method of fabricating nitride semiconductor device, nitride semiconductor device, semiconductor light emitting device and method of fabricating the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jun 28, 2005·22 cites·87 claims
- 0979US6858877B2Nitride semiconductor, method for manufacturing the same and nitride semiconductor deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Feb 22, 2005·22 cites·13 claims
- 1074US6777253B2Method for fabricating semiconductor, method for fabricating semiconductor substrate, and semiconductor light emitting deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Aug 17, 2004·16 cites·11 claims
- 1173US6764871B2Method for fabricating a nitride semiconductor deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jul 20, 2004·15 cites·11 claims
- 1272US6611005B2Method for producing semiconductor and semiconductor laser deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Aug 26, 2003·17 cites·2 claims
- 1371US6562129B2Formation method for semiconductor layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted May 13, 2003·11 cites·6 claims
- 1469US5339326AReflector for semiconductor laser end-face and method of manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Aug 16, 1994·23 cites·11 claims
- 1565US6940100B2Group III-V nitride semiconductor light-emitting device which allows for efficient injection of electrons into an active layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Sep 6, 2005·11 cites·9 claims
- 1665US6466597B1Semiconductor laser deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Oct 15, 2002·27 cites·21 claims
- 1764US9563403B2Random number generating devicePANASONIC IP MAN CO LTD·Filed 2014·Granted Feb 7, 2017·1 cites·9 claims
- 1862US6072762AOptical disk recording/reproducing method and apparatus for preventing wave length shift during recording and reproducing operationsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jun 6, 2000·15 cites·6 claims
- 1955US5817410ANonlinear optical composites using linear transparent substances and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 6, 1998·16 cites·5 claims
- 2052US6921678B2Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jul 26, 2005·2 cites·9 claims
- 2151US7108745B2Formation method for semiconductor layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Sep 19, 2006·2 cites·13 claims
- 2249US6265287B1Method for producing semiconductor layer for a semiconductor laser deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Jul 24, 2001·12 cites·4 claims
- 2348US6324200B1Semiconductor laser deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Nov 27, 2001·13 cites·4 claims
- 2437US5663974ASemiconductor laserMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Sep 2, 1997·7 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →