Inventor

KOYAMA KAZUHIKO

JP4 patents

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

NEC CORP

2 patents

US6947553B2Sep 20, 2005

Communication system for controlling training of echo canceller and line switching system

NEC CORP7 citations71

US7366657B2Apr 29, 2008

Voice signal processing system mounted with echo canceller and voice signal processing method

NEC CORP0 citations43

DAIFUKU KK

1 patent

US5284226AFeb 8, 1994

Carriage guiding post in a transfer lifter

DAIFUKU KK20 citations89

SHOWA CORP

1 patent

US6604913B2Aug 12, 2003

Vane pump

SHOWA CORP2 citations53