Inventor

SUGAWARA YOSHITAKA

JP64 patents

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

SUGAWARA YOSHITAKA

HITACHI LTD

Voltage-driven type semiconductor device

Power semiconductor device with low on-state voltage

Light coupled semiconductor device and method of manufacturing the same

Semiconductor device having a semi-insulating layer

Optoelectronic device having control circuit for light emitting element and circuit for light receiving element integrated in a semiconductor body

Semiconductor switch circuit

Dielectric isolated high voltage semiconductor device

Dielectric isolated high voltage semiconductor device

Semiconductor integrated circuit device

Bidirectional light-activated thyristor having substrate optical isolation

Solid-state switching circuit employing photon coupling suitable for construction in form of integrated circuit

Photo-coupled semiconductor device

Bidirectional grooved thyristor fired by activation of the beveled surfaces

Insulated gate type semiconductor device having built-in protection circuit

Semiconductor device

Insulated gate type semiconductor device having built-in protection circuit

Semiconductor device

Flip-flop circuit

Power conversion apparatus and its controlling method

Dielectric isolated high voltage semiconductor device

High voltage resistance element

KANSAI ELECTRIC POWER CO

Insulated gate semiconductor device

Vertical field-effect semiconductor device with buried gate region

Stable power supplying apparatus

Semiconductor device and method of producing the same, and power conversion apparatus incorporating this semiconductor device

High-heat-resistant semiconductor device

Semiconductor device and method of producing the same, and power conversion apparatus incorporating this semiconductor device

Semiconductor device and method of producing the same, and power conversion apparatus incorporating this semiconductor device

Semiconductor device and method of producing the same, and power conversion apparatus incorporating this semiconductor device

Silicon carbide semiconductor device and manufacturing method therefor

Silicon carbide semiconductor device and manufacturing method therefor

Silicon carbide semiconductor device and manufacturing method therefor

High-heat-resistive semiconductor device

DAICEL CORP

Optical laminate, method for producing same, and use of same

Antiglare film

Anti-glare film

Anti-glare film

Antiglare film

Antiglare film

Anti-glare film

Anti-glare film

Anti-glare film

Anti-glare film, method for producing same, and use of same

Anti-glare film

SUGAWARA YOSHITAKA

Semiconductor device

Semiconductor device comprising bipolar and unipolar transistors including a concave and convex portion

KANSAI ELECTRIC POWER COMPANY

High-voltage power semiconductor device with body regions of alternating conductivity and decreasing thickness

FUJI ELECTRIC CO LTD

Insulated gate bipolar transistor with high breakdown voltage

ISHII RYOSUKE

Silicon carbide bipolar semiconductor device

KANSAI ELECTRIC CO INC

Silicon carbide semiconductor device and manufacturing method therefor