Inventor · disambiguated record
Makoto Oohashi
Also filed as: OOHASHI MAKOTO
4 granted patents·14 citations·filing 1999–2004
73Inventor score
Files withHITACHI TELECOMM TECH4
Top patents by PatentIndex Score
4 records- 0163US7062033B2DTMF signal transmission method and communication apparatusHITACHI TELECOMM TECH·Filed 2004·Granted Jun 13, 2006·5 cites·8 claims
- 0261US7532606B2DTMF signal transmission method and communication apparatusHITACHI TELECOMM TECH·Filed 2004·Granted May 12, 2009·4 cites·8 claims
- 0351US7050570B2DTMF signal transmission method and communication apparatusHITACHI TELECOMM TECH·Filed 2004·Granted May 23, 2006·1 cites·20 claims
- 0435US6700973B1System for transmitting DTMF signal and communication equipment thereofHITACHI TELECOMM TECH·Filed 1999·Granted Mar 2, 2004·4 cites·14 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →