Inventor

KOYAMA AKIHIRO

JP86 patents

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

KOYAMA AKIHIRO

NIPPON SHEET GLASS CO LTD

Glass sheet and glass sheet photoelectric converter device

Glass substrate for magnetic recording media

Light-colored glass of high transmittance and method for production thereof, glass plate with electrically conductive film and method for production thereof, and glass article

Hydrofluoric acid etched substrate for information recording medium

Glass composition and substrate for information recording medium

Glass composition and process for producing the same

Glass composition and substrate for information recording media comprising the same

Glass composition and process for producing the same

Glass composition and substrate for information recording media comprising the same

Heat-resistant glass composition

Glass composition, glass article, glass substrate for magnetic recording media, and method for producing the same

High transmittance glass sheet and method of manufacturing the same

Flat glass having high transmittance

Glass substrate for use as information recording medium and method of manufacturing such glass substrate

Glass substrate for information recording medium, manufacturing method thereof, and information recording medium

Glass composition, and information recording medium substrate, information recording medium, and information recording device each comprising the composition

Glass-ceramics, process for producing the same, and substrate for information recording medium, information recording medium and information recording device each using the glass-ceramics

Glass composition and substrate for information recording media comprising the same

Glass composition and substrate for information recording media comprising the same

Fireproof sheet glass

Colored low-expansion transparent glass ceramic

Glass substrate for magnetic disks

Glass flake

Glass flake

Glass composition, glass article, glass substrate for magnetic recording media, and method for producing the same

Glass article and glass substrate for information recording media using the same

Method of manufacturing article having uneven surface

Ultraviolet ray transmitting glass composition and glass article making use of the same

Glass flake

High transmittance glass sheet and method of manufacturing the same

Method of manufacturing glass substrate for use as information recording medium

CANON KK

Surface acoustic wave device improved in convolution efficiency, receiver using it, communication system using it, and method for producing surface acoustic wave device improved in convoluting efficiency

Surface acoustic wave converter with improved frequency characteristics, surface acoustic wave device using such converter, and communication system using such device

Matched filter with improved synchronous characteristics, and reception device and communication system using the same

Efficient surface acoustic wave device capable of excitation in plural frequency bands, and signal receiver and communication system utilizing the same

Surface acoustic wave device and communication system using it

Compact surface acoustic wave apparatus, spread spectrum signal receiver using the same apparatus for reception of spread spectrum signal, and spread spectrum signal communication system using the same spread spectrum signal receiver

Efficient surface acoustic wave device capable of excitation in plural frequency bands, and signal receiver and communication system utilizing the same

AVANSTRATE INC

Glass substrate for display and display

Glass composition

Glass composition and process for producing glass composition

Glass substrate for flat panel display and method for manufacturing same

SONY CORP

Radiocommunication apparatus, radiocommunication system, and radiocommunication method

FUJIWARA KOSUKE

Glass flake and coated glass flake

KOYAMA AKIHIRO

Cover glass and method for producing same

HOYA CORP

Glass composition including zirconium, chemically strengthened glass article, glass substrate for magnetic recording media, and method of producing glass sheet

KISHIMOTO SHOICHI

Glass composition and process for producing glass composition

NIIDA HARUKI

Glass composition

MITSUBISHI ELECTRIC CORP

Silicon carbide semiconductor device having halogen field limiting ring regions and method of manufacturing same

MARKTEC CORP

Colored magnetic particles for magnetophoretic display and method for manufacturing same