Inventor

KOYAMA AKIRA

31 patents

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

KOYAMA AKIRA

ALPS ELECTRIC CO LTD

Perpendicular magnetic recording head with inverted trapezoidal main magnetic pole layer

Thin-film magnetic head with narrowed track width and method for making same

Thin-film head for reducing track width, preventing write fringing and reducing saturation

Thin-film magnetic head for reducing track width, preventing write fringing and reducing magnetic saturation, and production method thereof

Thin-film magnetic head having a high recording density and frequency

KOYAMA AKIRA

Network switching system with asynchronous and isochronous interface

Network switching system with asynchronous and isochronous interface

Process for producing aviation fuel base oil

Aviation fuel base oil and aviation fuel composition

JUNIPER NETWORKS INC

Network switching system with asynchronous and isochronous interface

Network switching system with asynchronous and isochronous interface

NAKAJIMA MASAYOSHI

Charge system, mobile electronic device, cell terminal used for them, and secondary cell

Portable electronic device and method for controlling the same

JTEKT CORP

Ball bearing

Touchdown bearing

TOYOTA MOTOR CO LTD

Electrolyte for lithium ion secondary battery, lithium ion secondary battery, and module

Non-aqueous electrolyte secondary battery and assembly thereof

NEC CORP

Communication method, voice transmission apparatus and voice reception apparatus

ASAHI CHEMICAL IND

Secondary battery

TOYODA GOSEI KK

Operating knob-mounting structure

IGUCHI YASUTOSHI

Process for producing hydrocarbon oil

DAINIPPON PRINTING CO LTD

Method of sterilization for container, apparatus using therefor and heat treatment for container

JX NIPPON OIL & ENERGY CORP

Fuel oil base and aviation fuel composition containing same

NICHICON CORP

Aluminum material for electrode of electrolytic capacitor and method for producing aluminum foil for electrode of electrolytic capacitor, and electrolytic capacitor

SEKIMOTO HIROSHI

Cage for ball bearing

NABATA TOSHIHISA

Human body detecting system

YAMADA DOBBY CO LTD

Hook connecting apparatus in a chain disc-type dobby machine

NTT INC

Disaster information provision device, disaster information provision system, disaster information provision method, and disaster information provision program

HAYASAKA KAZUAKI

Method for producing aviation fuel oil base and aviation fuel oil composition

SUDA KAZUYOSHI

Mobile electronic device

HAYAKAWA TAKANOBU

Mobile electronic device and method for controlling the same