Inventor · disambiguated record
Hirohiko Yatsuzuka
Also filed as: YATSUZUKA HIROHIKO
5 granted patents·1 pending application·55 citations·filing 1991–2001
79Inventor score
Files withHITACHI LTD5
Top patents by PatentIndex Score
6 records- 0174US6661235B2Method and device for detecting a partial discharge in an electrical deviceHITACHI LTD·Filed 2001·Granted Dec 9, 2003·21 cites·26 claims
- 0251US5298703AGas circuit breakerHITACHI LTD·Filed 1991·Granted Mar 29, 1994·12 cites·6 claims
- 0343US5757614AGas insulated switchgear apparatusHITACHI LTD·Filed 1995·Granted May 26, 1998·12 cites·7 claims
- 0438US5581439AGas insulated switchgearHITACHI LTD·Filed 1995·Granted Dec 3, 1996·9 cites·8 claims
- 0525US2002149904A1Gas-insulated switchFiled 2001·Application pending·0 cites
- 0624US6252763B1Gas-insulated electrical apparatusHITACHI LTD·Filed 1999·Granted Jun 26, 2001·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →