Inventor

ISHIKAWA TSUTOMU

US60 patents

⚠️ This page may combine multiple inventors who share the name “ISHIKAWA TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ISHIKAWA TSUTOMU

SANYO ELECTRIC CO

Optical semiconductor device

Optical semiconductor device and optical semiconductor module equipped with the same

Sound reproducer

Surround decoder

Semiconductor integrated circuit having pads with less input signal attenuation

Fm stereo receiver

Gain controlled amplifier circuit

Center mode control circuit

Balance control circuit

Signal distinction circuit

Delay circuit using a digital memory

Demodulator circuit for television multi-channel

FM/FMX stereophonic receiver

Signal processing circuit for an optical disk player including data decoding based on a regenerated bit clock

FMX stereophonic broadcast receiver

FMX stereophonic receiver

FM/FMX stereophonic receiver

Level determining circuit generating output signal at first or second output terminal according to level of input signal

SUMITOMO ELECTRIC INDUSTRIES

Semiconductor laser

Optical transmitter, method for controlling the same, and non-transitory computer-readable medium

Optical modulator

Method for manufacturing optical modulator, testing method, non-transitory storage medium, and light transmission apparatus

Method for manufacturing optical modulator, testing method, non-transitory storage medium, and light transmission apparatus

Optical modulator

Method to determine operating conditions of wavelength tunable laser diode and to control optical transmitter providing wavelength tunable laser diode

Method to determine operating conditions of wavelength tunable laser diode and to control optical transmitter providing wavelength tunable laser diode

EUDYNA DEVICES INC

Optical semiconductor device

Testing method of wavelength-tunable laser, controlling method of wavelength-tunable laser and laser device

Method of controlling semiconductor laser

Optical device and method of controlling the same

Optical semiconductor element and optical semiconductor device

Optical semiconductor element and optical semiconductor device

Optical semiconductor device and controlling method of the same

FUJITSU LTD

Semiconductor light-emitting device

Gain-coupled DFB laser diode

Tunable laser module, tunable laser apparatus and controlling method for tunable laser

Distributed feedback semiconductor laser

TOKYO OHKA KOGYO CO LTD

Silica-based antimony containing film-forming composition

Liquid composition for forming silica-based coating film

LUMILEDS LLC

Methods for growing light emitting devices under ultra-violet illumination

Methods for growing light emitting devices under ultra-violet illumination

TOYOTA MOTOR CO LTD

Method and apparatus for automatically assembling side gears, pinions and pinion shaft within differential case

Casting method with improved resin core removal step

LION CORP

Laser emission material

SEDI INC

Method of controlling wavelength-tunable laser

ROHM CO LTD

Semiconductor light emitting device

TANAKA HIROKAZU

Method for tuning semiconductor laser

ISHIKAWA TSUTOMU

Fm stereophonic receiver

SHIBATA MASAO

Method of controlling wavelength-tunable laser

TOKIWA PHYTOCHEMICAL CO LTD

Method of producing an alkoxyflavone derivative