Inventor · disambiguated record
Takeshi Onaka
Also filed as: ONAKA TAKESHI
11 granted patents·726 citations·filing 1997–2009
93Inventor score
Top patents by PatentIndex Score
11 records- 0195US6795322B2Power supply with uninterruptible functionHITACHI LTD·Filed 1999·Granted Sep 21, 2004·369 cites·23 claims
- 0287US7523619B2Indoor and outdoor unit communication via signal from a power lineHITACHI APPLIANCES INC·Filed 2004·Granted Apr 28, 2009·48 cites·4 claims
- 0387US6381152B1Method of driving semiconductor switching device in non-saturated state and power supply apparatus containing such a switching deviceHITACHI LTD·Filed 2000·Granted Apr 30, 2002·32 cites·17 claims
- 0483US7053502B2Power supply with uninterruptible functionHITACHI COMP PERIPHERALS CO·Filed 2004·Granted May 30, 2006·55 cites·10 claims
- 0583US6507507B2DC power supply deviceHITACHI LTD·Filed 2001·Granted Jan 14, 2003·41 cites·11 claims
- 0683US6101819ATemperature control device for refrigeratorsMATSUSHITA REFRIGERATION·Filed 1997·Granted Aug 15, 2000·66 cites·16 claims
- 0779US6643152B2DC power supply deviceHITACHI LTD·Filed 2002·Granted Nov 4, 2003·26 cites·9 claims
- 0876US6496395B2Direct-current power-supply apparatus, control circuit thereof and semiconductor integrated circuit device for power supplyHITACHI LTD·Filed 2001·Granted Dec 17, 2002·28 cites·16 claims
- 0975US7770403B2Indoor and outdoor unit communication via signal from a power lineHITACHI APPLIANCES INC·Filed 2009·Granted Aug 10, 2010·6 cites·10 claims
- 1075US6655765B2Refrigerator door openerMATSUSHITA REFRIGERATION·Filed 2002·Granted Dec 2, 2003·33 cites·35 claims
- 1168US6603671B2Synchronized rectifier voltage step down DC-DC converter and control circuit thereforHITACHI LTD·Filed 2001·Granted Aug 5, 2003·22 cites·22 claims
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