Inventor
TANAKA KEIJI
JP151 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO ELECTRIC INDUSTRIES
15 patentsUS6397067B1May 28, 2002
Roadside transmitter
SUMITOMO ELECTRIC INDUSTRIES28 citations92
US7286611B2Oct 23, 2007
Roadway communication system
SUMITOMO ELECTRIC INDUSTRIES15 citations88
US10819425B2Oct 27, 2020
Transimpedance amplifier for receiving burst optical signal
SUMITOMO ELECTRIC INDUSTRIES9 citations84
US8766728B2Jul 1, 2014
Trans-impedance amplifier with enhanced dynamic range but invariable input impedance
SUMITOMO ELECTRIC INDUSTRIES8 citations84
US8358938B2Jan 22, 2013
Optical receiver able to prevent LOS alarm from malfunctioning
SUMITOMO ELECTRIC INDUSTRIES8 citations84
US7912380B2Mar 22, 2011
Optical receiver
SUMITOMO ELECTRIC INDUSTRIES7 citations84
US7843212B2Nov 30, 2010
Differential circuit with precisely controlled terminator circuit
SUMITOMO ELECTRIC INDUSTRIES16 citations84
US7483459B2Jan 27, 2009
Laser driver with selectable output impedance
SUMITOMO ELECTRIC INDUSTRIES8 citations84
US9046703B2Jun 2, 2015
Optical modulator module and semiconductor optical modulator
SUMITOMO ELECTRIC INDUSTRIES9 citations83
US7124592B2Oct 24, 2006
Temperature controlling circuit for a semiconductor light-emitting device
SUMITOMO ELECTRIC INDUSTRIES9 citations74
US12068788B2Aug 20, 2024
Receiver circuit for optical communication
SUMITOMO ELECTRIC INDUSTRIES2 citations73
US11990747B2May 21, 2024
Electrostatic protection circuit and semiconductor integrated circuit
SUMITOMO ELECTRIC INDUSTRIES2 citations73
US11799288B2Oct 24, 2023
Electrostatic protection circuit and semiconductor integrated circuit
SUMITOMO ELECTRIC INDUSTRIES3 citations73
US11601203B2Mar 7, 2023
Transimpedance amplifier for receiving burst optical signal
SUMITOMO ELECTRIC INDUSTRIES3 citations73
US11486760B2Nov 1, 2022
Receiving circuit and optical receiving circuit
SUMITOMO ELECTRIC INDUSTRIES2 citations73
SANYO CHEMICAL IND LTD
5 patentsUS6951911B2Oct 4, 2005
Cross-linked polymer and process for producing the same, absorptive structure and absorptive article
SANYO CHEMICAL IND LTD27 citations91
US6284362B1Sep 4, 2001
Absorbent compositions, methods for producing thereof and absorbent products
SANYO CHEMICAL IND LTD44 citations91
US5112903AMay 12, 1992
Articles molded from moisture shrinkable resins
SANYO CHEMICAL IND LTD25 citations86
US6630534B1Oct 7, 2003
Polyurethane paste composition and sealing material
SANYO CHEMICAL IND LTD16 citations82
US5789507AAug 4, 1998
Method for preparing water absorbent resin
SANYO CHEMICAL IND LTD17 citations82
CANON KK
4 patentsUS4050802ASep 27, 1977
Electrophotographic copying machine
CANON KK19 citations82
US3936184AFeb 3, 1976
Electrophotographic copying machine
CANON KK31 citations82
US4262999AApr 21, 1981
Method and device for cleaning photosensitive screen in an image forming apparatus
CANON KK6 citations74
US3976484AAug 24, 1976
Screen electrophotographic process
CANON KK13 citations74
NIPPON TELEGRAPH & TELEPHONE
3 patentsUS5751452AMay 12, 1998
Optical devices with high polymer material and method of forming the same
NIPPON TELEGRAPH & TELEPHONE281 citations98
US5748272AMay 5, 1998
Method for making an optical device using a laser beam interference pattern
NIPPON TELEGRAPH & TELEPHONE176 citations98
US5124769AJun 23, 1992
Thin film transistor
NIPPON TELEGRAPH & TELEPHONE113 citations96
FUJI PHOTO FILM CO LTD
3 patentsKDD CORP
3 patentsUS6115173ASep 5, 2000
Optical amplifying transmission system and optical amplifier
KDD CORP30 citations93
US6594428B1Jul 15, 2003
Dispersion compensating optical transmission line and system
KDD CORP27 citations92
US6504638B1Jan 7, 2003
Optical amplifying transmission system and optical amplifier
KDD CORP8 citations74
SHARP KK
2 patentsUS6142469ANov 7, 2000
Sheet ejecting mechanism with contact member and advance descending of tray to prevent direct return of contact member
SHARP KK62 citations95
US6206365B1Mar 27, 2001
Sheet receiving apparatus for sorting and stacking sheets on a tray with friction-free horizontal reciprocation
SHARP KK23 citations92
KDDI CORP
2 patentsSANKYO CO
1 patentFUJITSU LTD
1 patentKDDI SUBMARINE CABLE SYS INC
1 patentSUMITOMO PHARMA
1 patentHITACHI LTD
1 patentSHELL OIL CO
1 patentSUZUKI MOTOR CO
1 patentMOTO AKIHIRO
1 patentPANASONIC COMM CO LTD
1 patentSATO TADASHI
1 patentSUN S CO LTD
1 patentTATSUMI TAIZOU
1 patentKYOWA HAKKO KOGYO KK
1 patentShowing the top 50 of 151 patents by PatentIndex Score.