Inventor

IWATA HIROKAZU

JP51 patents

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

IWATA HIROKAZU

RICOH KK

Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate

Optical line printhead and an LED chip used therefor

Light-emitting diode of edge-emitting type, light-receiving device of lateral-surface-receiving type, and arrayed light source

Methods of growing a group III nitride crystal

Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate

Group III nitride crystal, crystal growth process and crystal growth apparatus of group III nitride

Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device

Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device

Crystal growth method

Production of a GaN bulk crystal substrate and a semiconductor device formed thereon

Crystal growth apparatus and method of producing a crystal

Methods of growing a group III nitride crystal

Crystal manufacturing apparatus

NIHON DEMPA KOGYO CO

Crystal unit and manufacturing method thereof

Piezoelectric device

At-cut crystal element, crystal resonator and crystal unit

Crystal unit

Crystal unit

AT-cut crystal element, crystal resonator and crystal unit

Piezoelectric device, piezoelectric vibrating piece, and method for manufacturing piezoelectric vibrating piece

Piezoelectric device and manufacturing method of the same

Crystal unit and manufacturing method thereof

Crystal unit

SARAYAMA SEIJI

Crystal producing apparatus, crystal producing method, substrate producing method, gallium nitride crystal, and gallium nitride substrate

Crystal growth apparatus

Production of a GaN bulk crystal substrate and a semiconductor device formed thereon

Crystal growth apparatus and manufacturing method of group III nitride crystal

Crystal growth apparatus and manufacturing method of group III nitride crystal

Crystal manufacturing apparatus

Crystal growth apparatus and manufacturing method of group III nitride crystal

Crystal producing apparatus, crystal producing method, substrate producing method, gallium nitride crystal, and gallium nitride substrate

Method of producing group III nitride crystal, apparatus for producing group III nitride crystal, and group III nitride crystal

IWATA HIROKAZU

Manufacturing method and manufacturing apparatus of a group III nitride crystal

Method for producing N-type group III nitride single crystal, N-type group III nitride single crystal, and crystal substrate

Manufacturing method and manufacturing apparatus of a group III nitride crystal, utilizing a melt containing a group III metal, an alkali metal, and nitrogen

Group III nitride crystal and manufacturing method thereof

Method for producing N-type group III nitride single crystal, N-type group III nitride single crystal, and crystal substrate

Crystal preparing device, crystal preparing method, and crystal

Group III nitride crystal and manufacturing method thereof

TOYO COMMUNICATION EQUIP

Piezoelectric substrate, piezoelectric resonating element and surface-mount piezoelectric oscillator

Piezoelectric resonator and method for manufacturing the same

High frequency piezoelectric resonator having reduced spurious modes

Piezoelectric resonator and the method for making the same

Piezoelectric resonator and the method for making the same

RICOH CO LTD

Group III nitride crystal, crystal growth process and crystal growth apparatus of group III nitride

Reflector, surface emitting laser, method for manufacturing reflector, and method for manufacturing surface emitting laser

Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate

BROTHER IND LTD

Lamination apparatus and sheet roll for use in lamination apparatus

MIYADERA TATSUYA

Positional error detection method and apparatus, and computer-readable storage medium

SATOH TAKASHI

Nitride crystal and method for producing the same