Inventor

KOYAMA AKIHIKO

JP3 patents

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

OSAKI ELECTRIC CO LTD

1 patent

US4744093AMay 10, 1988

Method of detecting phase pulse signals from an AC distribution line

OSAKI ELECTRIC CO LTD7 citations70

SEIKO EPSON CORP

1 patent

US7459805B2Dec 2, 2008

Image forming apparatus

SEIKO EPSON CORP4 citations57

TATSUTA ELECTRIC WIRE & CABLE CO LTD

1 patent

US12130488B2Oct 29, 2024

Optical fiber

TATSUTA ELECTRIC WIRE & CABLE CO LTD0 citations52