Inventor · disambiguated record
Yoshihiro Hagiwara
Also filed as: HAGIWARA YOSHIHIRO
56 granted patents·2 pending applications·479 citations·filing 1996–2024
98Inventor score
Top patents by PatentIndex Score
58 records- 0189US7460299B2Rear projection display apparatus and transmission type screenSONY CORP·Filed 2007·Granted Dec 2, 2008·13 cites·12 claims
- 0287US6039442AElectrostatic ink jet recording device having a stirring systemNEC CORP·Filed 1997·Granted Mar 21, 2000·57 cites·7 claims
- 0384US6824083B2Fluid jetting device, fluid jetting head, and fluid jetting apparatusFUJI XEROX CO LTD·Filed 2002·Granted Nov 30, 2004·25 cites·19 claims
- 0482US6116727AInk supply mechanismNEC CORP·Filed 1999·Granted Sep 12, 2000·43 cites·12 claims
- 0577US6236226B1Test method and system for uninterruptible power supplyNEC CORP·Filed 1998·Granted May 22, 2001·40 cites·16 claims
- 0671US6377760B1Toner concentration measuring apparatusFUJI XEROX CO LTD·Filed 2000·Granted Apr 23, 2002·12 cites·16 claims
- 0765US2025082407A1Mounted body design assistance device, mounted body design assistance method, and mounted body design assistance programUNIV TOHOKU·Filed 2024·Application pending·0 cites
- 0864US6135590AInk cartridge capable of preventing leak of inkNEC CORP·Filed 1998·Granted Oct 24, 2000·22 cites·21 claims
- 0963US6956534B2Method and apparatus for improving antenna efficiencyCOCOMO MB COMMUNICATIONS INC·Filed 2003·Granted Oct 18, 2005·14 cites·25 claims
- 1062US6154620AToner concentration measuring method, toner concentration measuring apparatus and image forming apparatus employing the sameNEC CORP·Filed 1999·Granted Nov 28, 2000·14 cites·7 claims
- 1160US6179418B1Electrostatic ink jet recording apparatus that adjusts the amount of heat based on the type of recording materialNEC CORP·Filed 1997·Granted Jan 30, 2001·18 cites·22 claims
- 1258US6076909AGap adjusting device for a print head used in an ink jet recording apparatus and gap adjusting methodNEC CORP·Filed 1998·Granted Jun 20, 2000·16 cites·17 claims
- 1353US6490921B2Oscillating liquid level measuring apparatusFUJI XEROX CO LTD·Filed 2000·Granted Dec 10, 2002·6 cites·14 claims
- 1453US6164760AToner quantity detection and replenishment system for an electrostatic ink jet recording apparatusNEC CORP·Filed 1997·Granted Dec 26, 2000·13 cites·19 claims
- 1550US5801730AInk jet print head having a projecting ejection electrodeNEC CORP·Filed 1996·Granted Sep 1, 1998·11 cites·7 claims
- 1649US5905510AToner content monitoring system for use in a recording head for ink-jet printerNEC CORP·Filed 1996·Granted May 18, 1999·11 cites·11 claims
- 1748US6130691AInkjet recording apparatus having specific driving circuitry for driving electrophoresis electrodesNEC CORP·Filed 1997·Granted Oct 10, 2000·10 cites·32 claims
- 1847US6152557AElectrostatic ink jet recorderNEC CORP·Filed 1998·Granted Nov 28, 2000·9 cites·4 claims
- 1947US5874972AElectrostatic ink jet record head having a control electrode for equalizing the electric field of an ink chamber an ink jet recorder using sameNEC CORP·Filed 1996·Granted Feb 23, 1999·10 cites·3 claims
- 2046US6480683B2Device for adjusting a developing solution for an electrostatic wet-type electrophotographic printerFUJI XEROX CO LTD·Filed 2001·Granted Nov 12, 2002·3 cites·8 claims
- 2146US6172693B1Ink jet recording head having ink stirring electrodes for dispersing inkNEC CORP·Filed 1997·Granted Jan 9, 2001·9 cites·7 claims
- 2246US6022097AInk-jet printer to use ink containing pigment particlesNEC CORP·Filed 1996·Granted Feb 8, 2000·10 cites·11 claims
- 2345US5742412AInk jet type head for pigment type ink with different pulses applied to electrodesNEC CORP·Filed 1996·Granted Apr 21, 1998·9 cites·4 claims
- 2444US5877790AElectrostatic ink jet recording apparatus ejecting ink using different electric potentials applied to different electrodesNEC CORP·Filed 1996·Granted Mar 2, 1999·8 cites·15 claims
- 2542US6224193B1Inkjet recording apparatus having gate electrodes and print head thereofNEC CORP·Filed 1997·Granted May 1, 2001·8 cites·19 claims
- 2641US5754200AInk jet type head assemblyNEC CORP·Filed 1996·Granted May 19, 1998·6 cites·4 claims
- 2740US6059399AInk-jet recording apparatus with improved ink density formationNEC CORP·Filed 1997·Granted May 9, 2000·6 cites·9 claims
- 2840US5926194AElectrostatic ink jet recording deviceNEC CORP·Filed 1996·Granted Jul 20, 1999·6 cites·15 claims
- 2940US2005168392A1Antenna efficiencyCOCOMO MB COMMUNICATIONS INC·Filed 2005·Application pending·0 cites
- 3039US6142610APrecision ejection ink-jet printing apparatusNEC CORP·Filed 1998·Granted Nov 7, 2000·5 cites·10 claims
- 3139US6076918AMethod of manufacturing an electrostatic ink jet printing head with pointed ink ejectorsNEC CORP·Filed 1997·Granted Jun 20, 2000·5 cites·1 claims
- 3238US6362859B1Electrostatic ink jet recording head having electrophoretic electrode and gravity ink reservoirNEC CORP·Filed 1996·Granted Mar 26, 2002·5 cites·4 claims
- 3338US5975684AInk jet recording head having an ink stream pathNEC CORP·Filed 1996·Granted Nov 2, 1999·5 cites·7 claims
- 3437US6161911AInk jet recording deviceNEC CORP·Filed 1997·Granted Dec 19, 2000·4 cites·12 claims
- 3536US6220696B1Simple electrostatic ink jet printing head having low costNEC CORP·Filed 1997·Granted Apr 24, 2001·4 cites·34 claims
- 3636US5988795AElectrostatic ink jet recording apparatus preventing precipitation of charged particulate material in ink liquidNEC CORP·Filed 1996·Granted Nov 23, 1999·4 cites·37 claims
- 3735US6412895B1Electrostatic ink jet printerNEC CORP·Filed 1998·Granted Jul 2, 2002·3 cites·8 claims
- 3835US6331046B1Electrostatic inkjet head having an ink drain for draining ink from a slitNEC CORP·Filed 1998·Granted Dec 18, 2001·4 cites·3 claims
- 3935US6208321B1Electrostatic ink jet recorder having ejection electrodes and auxiliary electrodes divided into groupsNEC CORP·Filed 1998·Granted Mar 27, 2001·3 cites·14 claims
- 4035US6089699AMethod and apparatus for controlling inkjet ejection electrodes by varying the electrodes potentialsNEC CORP·Filed 1997·Granted Jul 18, 2000·3 cites·35 claims
- 4135US6079817AElectrostatic ink-jet recording headNEC CORP·Filed 1998·Granted Jun 27, 2000·3 cites·30 claims
- 4235US6074044AElectrostatic ink jet recording head using control and recording electrodes for ejecting toner particlesNEC CORP·Filed 1997·Granted Jun 13, 2000·3 cites·5 claims
- 4335US5997133AInkjet recording apparatus having a minimum number of ejection electrode driving circuits and method for driving sameNEC CORP·Filed 1997·Granted Dec 7, 1999·3 cites·29 claims
- 4435US5940098AInk-jet printer using ink containing pigment particlesNEC CORP·Filed 1996·Granted Aug 17, 1999·4 cites·10 claims
- 4534US6213591B1Injet recording apparatusNEC CORP·Filed 1997·Granted Apr 10, 2001·3 cites·24 claims
- 4633US6220695B1Ink-jet recording device for suppressing excess electrophoretic accumulation of charged particlesNEC CORP·Filed 1996·Granted Apr 24, 2001·2 cites·22 claims
- 4733US6119342AMethod of producing a record head for an electrostatic ink jet recorderNEC CORP·Filed 1997·Granted Sep 19, 2000·2 cites·3 claims
- 4832US6183065B1Control system for applying biasing and recording signals to recording electrodes of an electrostatic ink jet recording deviceNEC CORP·Filed 1998·Granted Feb 6, 2001·1 cites·7 claims
- 4932US6161922AElectrostatic ink-jet recording head having a head chip provided with groove and flange portionsNEC CORP·Filed 1998·Granted Dec 19, 2000·1 cites·8 claims
- 5032US6155672AApparatus and method for ink-jet printing using extending ink-ejecting bars and method of manufacturing of the apparatusNEC CORP·Filed 1997·Granted Dec 5, 2000·1 cites·30 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →