Inventor
HAYAKAWA TOSHIRO
JP79 patents
⚠️ This page may combine multiple inventors who share the name “HAYAKAWA TOSHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHARP KK
23 patentsUS4890293ADec 26, 1989
Semiconductor laser device
SHARP KK32 citations93
US4567060AJan 28, 1986
Method of producing a semiconductor laser device
SHARP KK42 citations93
US5022036AJun 4, 1991
Semiconductor laser device
SHARP KK31 citations92
US4845724AJul 4, 1989
Semiconductor laser device having optical guilding layers of unequal resistance
SHARP KK32 citations92
US4750183AJun 7, 1988
Semiconductor laser device
SHARP KK41 citations92
US4745612AMay 17, 1988
Separate confinement heterostructure semiconductor laser device
SHARP KK41 citations92
US5001522AMar 19, 1991
Optical semiconductor device
SHARP KK12 citations74
US4941024AJul 10, 1990
Semiconductor apparatus
SHARP KK10 citations74
US4907239AMar 6, 1990
Semiconductor laser device
SHARP KK6 citations74
US4905246AFeb 27, 1990
Semiconductor laser device
SHARP KK13 citations74
US4901326AFeb 13, 1990
Semiconductor laser device
SHARP KK12 citations74
US4894836AJan 16, 1990
Semiconductor device
SHARP KK15 citations74
US4887274ADec 12, 1989
Deterioration-resistant superlattice semiconductor laser device
SHARP KK11 citations74
US4862470AAug 29, 1989
Semiconductor laser device
SHARP KK7 citations74
US4860297AAug 22, 1989
Quantum well semiconductor laser device
SHARP KK13 citations74
US4852111AJul 25, 1989
Semiconductor laser device
SHARP KK14 citations74
US4841533AJun 20, 1989
Semiconductor laser device having a graded index waveguide
SHARP KK9 citations74
US4835783AMay 30, 1989
Semiconductor laser
SHARP KK16 citations74
US4824518AApr 25, 1989
Method for the production of semiconductor devices
SHARP KK8 citations74
US4787089ANov 22, 1988
Quantum well semiconductor laser device
SHARP KK13 citations74
US4759024AJul 19, 1988
Semiconductor laser device having an oscillation wavelength in the visible short-wavelength region
SHARP KK9 citations74
US4746181AMay 24, 1988
Optical semiconductor device
SHARP KK13 citations74
US4693207ASep 15, 1987
Apparatus for the growth of semiconductor crystals
SHARP KK7 citations74
FUJI PHOTO FILM CO LTD
19 patentsUS7062311B1Jun 13, 2006
Fluorescence observing apparatus
FUJI PHOTO FILM CO LTD57 citations96
US6594297B1Jul 15, 2003
Laser apparatus in which surface-emitting semiconductor is excited with semiconduct laser element and high-order oscillation modes are suppressed
FUJI PHOTO FILM CO LTD30 citations93
US6362515B2Mar 26, 2002
GaN substrate including wide low-defect region for use in semiconductor element
FUJI PHOTO FILM CO LTD31 citations93
US5856994AJan 5, 1999
Laser-diode-pumped solid-state laser using index-guided type multi-transverse mode broad area laser
FUJI PHOTO FILM CO LTD18 citations93
US6798804B2Sep 28, 2004
Laser apparatus including surface-emitting semiconductor excited with semiconductor laser element, and directly modulated
FUJI PHOTO FILM CO LTD15 citations84
US6433345B1Aug 13, 2002
Fluorescence observing apparatus
FUJI PHOTO FILM CO LTD16 citations84
US6999486B2Feb 14, 2006
Semiconductor laser element and semiconductor laser
FUJI PHOTO FILM CO LTD9 citations74
US6977780B2Dec 20, 2005
Image exposure device and laser exposure device applied thereto
FUJI PHOTO FILM CO LTD5 citations74
US6885687B2Apr 26, 2005
Semiconductor laser module having optical wavelength conversion element and semiconductor laser element which includes quantum-well sublayers having different thicknesses and/or compositions
FUJI PHOTO FILM CO LTD11 citations74
US6876688B1Apr 5, 2005
Semiconductor laser and method of manufacturing the same
FUJI PHOTO FILM CO LTD11 citations74
US6778573B2Aug 17, 2004
Fundamental-transverse-mode index-guided semiconductor laser device having upper optical waveguide layer thinner than lower optical waveguide layer
FUJI PHOTO FILM CO LTD7 citations74
US6738403B2May 18, 2004
Semiconductor laser element and semiconductor laser
FUJI PHOTO FILM CO LTD10 citations74
US6728285B2Apr 27, 2004
Stripe type semiconductor light emitting element having InGan active layer, combined with optical resonator including wavelength selection element
FUJI PHOTO FILM CO LTD5 citations74
US6683324B2Jan 27, 2004
Semiconductor laser device in which thicknesses of optical guide region and AlGaN cladding layers satisfy predetermined condition
FUJI PHOTO FILM CO LTD7 citations74
US6625190B1Sep 23, 2003
Semiconductor laser device having thickened impurity-doped aluminum-free optical waveguide layers
FUJI PHOTO FILM CO LTD8 citations74
US6567444B2May 20, 2003
High-power semiconductor laser device in which near-edge portions of active layer are removed
FUJI PHOTO FILM CO LTD10 citations74
US6167071ADec 26, 2000
Semiconductor laser
FUJI PHOTO FILM CO LTD12 citations74
US5684824ANov 4, 1997
Semiconductor light emitting device
FUJI PHOTO FILM CO LTD8 citations74
US5608743AMar 4, 1997
Semiconductor light emitting device
FUJI PHOTO FILM CO LTD12 citations74
EASTMAN KODAK CO
8 patentsUS5289484AFeb 22, 1994
Laser diode
EASTMAN KODAK CO34 citations93
US5260959ANov 9, 1993
Narrow beam divergence laser diode
EASTMAN KODAK CO26 citations93
US5033043AJul 16, 1991
Optical head apparatus for optical disks
EASTMAN KODAK CO36 citations93
US4916708AApr 10, 1990
Semiconductor light-emitting devices
EASTMAN KODAK CO21 citations82
US5299219AMar 29, 1994
Stripe-type laser diode used as a light source
EASTMAN KODAK CO14 citations74
US5263040ANov 16, 1993
Strained quantum well laser diode
EASTMAN KODAK CO10 citations74
US5105236AApr 14, 1992
Heterojunction light-emitting diode array
EASTMAN KODAK CO10 citations74
US5084892AJan 28, 1992
Wide gain region laser diode
EASTMAN KODAK CO17 citations74
Showing the top 50 of 79 patents by PatentIndex Score.