Inventor · disambiguated record
Sakae Nagayama
Also filed as: NAGAYAMA SAKAE
3 granted patents·5 citations·filing 1996–2004
55Inventor score
Top patents by PatentIndex Score
3 records- 0138US7545798B2Communication system for controlling a call portionHITACHI COMM TECH LTD·Filed 2004·Granted Jun 9, 2009·0 cites·10 claims
- 0233US6507578B1Channel division control equipment of the ISDN primary rate interface circuitHITACHI TELECOMM TECH·Filed 2000·Granted Jan 14, 2003·0 cites·3 claims
- 0330US6141343AChannel division control equipment of the ISDN primary rate interface circuitHITACHI TELECOMM TECH·Filed 1996·Granted Oct 31, 2000·5 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →