Inventor
NITTA JUN
JP54 patents
⚠️ This page may combine multiple inventors who share the name “NITTA JUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
28 patentsUS5901166AMay 4, 1999
Oscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laser
CANON KK72 citations96
US5212577AMay 18, 1993
Optical communication equipment and optical communication method
CANON KK60 citations96
US5659560AAug 19, 1997
Apparatus and method for driving oscillation polarization selective light source, and optical communication system using the same
CANON KK92 citations95
US6252895B1Jun 26, 2001
Distributed feedback semiconductor laser in which light intensity distributions differ in different polarization modes, and driving method therefor
CANON KK35 citations93
US6031860AFeb 29, 2000
Optical device capable of switching output intensity of light of predetermined polarized wave, optical transmitter using the device, network using the transmitter, and method of driving optical device
CANON KK41 citations93
US5822352AOct 13, 1998
Optical semiconductor apparatus, fabrication method thereof, modulation method therefor, light source apparatus and optical communication system using the same
CANON KK28 citations93
US5790581AAug 4, 1998
Oscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laser
CANON KK21 citations93
US5608572AMar 4, 1997
Optical apparatus and a method using the apparatus, which utilizes the occurrence of a change in a both-end voltage of an amplifying region
CANON KK24 citations93
US5606176AFeb 25, 1997
Strained quantum well structure having variable polarization dependence and optical device including the strained quantum well structure
CANON KK41 citations93
US5590145ADec 31, 1996
Light-emitting apparatus capable of selecting polarization direction, optical communication system, and polarization modulation control method
CANON KK48 citations93
US5521754AMay 28, 1996
Optical apparatus and a method using the apparatus, which utilizes the occurrence of a change in a both-end voltage of an amplifying region
CANON KK28 citations93
US5471335ANov 28, 1995
Semiconductor optical amplifier device and a method of using the same
CANON KK25 citations93
US5202782AApr 13, 1993
Optical communication method and optical communication system
CANON KK37 citations93
US6334014B1Dec 25, 2001
Optical fiber apparatus provided with demultiplexing/multiplexing unit on fiber's end portion, optical detecting apparatus provided with demultiplexing/multiplexing unit on its light receiving surface, and optical transmission system using the same
CANON KK41 citations92
US5926497AJul 20, 1999
Diffraction grating with alternately-arranged different regions, optical semiconductor device with the diffraction grating, and apparatus and optical communication system using the same
CANON KK21 citations92
US5309275AMay 3, 1994
Semiconductor optical amplifying apparatus
CANON KK32 citations92
US6807201B1Oct 19, 2004
Laser with phase controlling region and method for driving the same
CANON KK18 citations84
US6304329B1Oct 16, 2001
Gyro and semiconductor device having a plurality of laser diodes
CANON KK18 citations84
US5862165AJan 19, 1999
Variable wavelength light source using a laser, wavelength control method, optical communication system and optical communication method
CANON KK17 citations84
US6091745AJul 18, 2000
Semiconductor laser capable of changing polarization mode of its output light, semiconductor laser apparatus and driving method therefor
CANON KK13 citations74
US5848085ADec 8, 1998
Semiconductor quantum well structure and semiconductor device using the same
CANON KK6 citations74
US5414549AMay 9, 1995
Semiconductor optical amplifying apparatus
CANON KK7 citations74
US5309268AMay 3, 1994
Optical communication system and optical communication method
CANON KK12 citations74
US5224114AJun 29, 1993
Semiconductor laser devices with a plurality of light emitting layers having different bands gaps and methods for driving the same
CANON KK10 citations74
US5157544AOct 20, 1992
Waveguide optical element and its driving method
CANON KK14 citations74
US5223972AJun 29, 1993
Optical amplifiers, optical communication systems networks using the amplifier and integrated optical nodes including the amplifier
CANON KK18 citations73
US5809047ASep 15, 1998
Method for driving a wavelength changeable light source apparatus, such a wavelength changeable light source apparatus and an optical communication system using the same
CANON KK2 citations63
US5440581AAug 8, 1995
Semiconductor optical filter and an optical communication system using the same
CANON KK5 citations63
TOYAMA CHEMICAL CO LTD
6 patentsUS4698352AOct 6, 1987
4-oxo-1,4-dihydronicotinic acid derivatives, salts thereof, and antibacterial agents containing the same
TOYAMA CHEMICAL CO LTD30 citations89
US4436921AMar 13, 1984
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing same
TOYAMA CHEMICAL CO LTD4 citations72
US4990508AFeb 5, 1991
Pyridone carboxylic acid derivatives and salts thereof, process for producing the same and antibacterial agents comprising the same
TOYAMA CHEMICAL CO LTD18 citations70
US4477666AOct 16, 1984
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing same
TOYAMA CHEMICAL CO LTD2 citations61
US4477664AOct 16, 1984
Novel 1-(4-piperidiniobenzyl)-2,3-dioxopiperazine derivatives or acid addition salts thereof
TOYAMA CHEMICAL CO LTD1 citations61
US4448963AMay 15, 1984
4-[4-(Thiazolyl-amino)benzyl]-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing same
TOYAMA CHEMICAL CO LTD1 citations61
HITACHI LTD
4 patentsUS5287521AFeb 15, 1994
Method and apparatus for releasing and obtaining shared and exclusive locks
HITACHI LTD104 citations96
US5251318AOct 5, 1993
Multiprocessing system comparing information copied from extended storage before and after processing for serializing access to shared resource
HITACHI LTD76 citations93
US5109511AApr 28, 1992
Shared resource managing method and system
HITACHI LTD48 citations93
US6564323B2May 13, 2003
Personal information controlling method and personal information controlling apparatus
HITACHI LTD31 citations92
NIPPON STEEL & SUMITOMO METAL CORP
4 patentsUS10467361B2Nov 5, 2019
Stretch flange crack prediction method, stretch flange crack prediction apparatus, computer program, and recording medium
NIPPON STEEL & SUMITOMO METAL CORP3 citations73
US11016011B2May 25, 2021
Breaking prediction method, program, recording medium, and arithmetic processing device
NIPPON STEEL & SUMITOMO METAL CORP2 citations72
US10220427B2Mar 5, 2019
Press-molding apparatus, press-molding method, and press-molded product
NIPPON STEEL & SUMITOMO METAL CORP5 citations72
US10695814B2Jun 30, 2020
Method for manufacturing press-formed product, device for manufacturing press-formed product, mandrel, and press-formed product
NIPPON STEEL & SUMITOMO METAL CORP1 citations62
HOLON CO LTD
2 patentsJAPAN DISPLAY INC
2 patentsNITTA KAZUFUKU
1 patentMAGNOLIA WHITE CORP
1 patentTOYAMA CHEMICAL COMPANY LIMITE
1 patentUENISHI AKIHIRO
1 patentShowing the top 50 of 54 patents by PatentIndex Score.