Inventor

HIRATSUKA KENJI

JP19 patents

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

HIRATSUKA KENJI

SUMITOMO ELECTRIC INDUSTRIES

Method for manufacturing silicon carbide semiconductor device

Method for producing semiconductor optical device

Semiconductor optical device and method of fabricating the same

Semiconductor light-emitting device and a method to produce the same

Light-emitting device with a protection layer to prevent the inter-diffusion of zinc (Zn) atoms

Method of producing semiconductor optical device

Method of manufacturing a hetero-junction bipolar transistor with epitaxially grown multi-layer films and annealing at or below 600° C.

Method for producing semiconductor optical device

Method for producing integrated optical device

Method for manufacturing silicon carbide semiconductor device having trench

Method for manufacturing silicon carbide semiconductor device and silicon carbide semiconductor device

Semiconductor laser and method of making the same

YONEDA YOSHIHIRO

Method of making semiconductor optical integrated device by alternately arranging spacers with integrated device arrays

Semiconductor optical integrated device

Method for producing semiconductor optical integrated device

HIRATSUKA KENJI

Method for manufacturing semiconductor optical device and semiconductor optical device

Method for producing semiconductor optical device

Method of fabricating semiconductor laser

DAINIPPON TORYO KK

Light transmissible high density elastic resin composition