Inventor · disambiguated record
Kazuhiko Koyama
Also filed as: KOYAMA KAZUHIKO
4 granted patents·29 citations·filing 1992–2003
71Inventor score
Top patents by PatentIndex Score
4 records- 0160US6947553B2Communication system for controlling training of echo canceller and line switching systemNEC CORP·Filed 2003·Granted Sep 20, 2005·7 cites·9 claims
- 0259US5284226ACarriage guiding post in a transfer lifterDAIFUKU KK·Filed 1992·Granted Feb 8, 1994·20 cites·10 claims
- 0336US7366657B2Voice signal processing system mounted with echo canceller and voice signal processing methodNEC CORP·Filed 2003·Granted Apr 29, 2008·0 cites·8 claims
- 0435US6604913B2Vane pumpSHOWA CORP·Filed 2001·Granted Aug 12, 2003·2 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →