Inventor · disambiguated record
Katsuji Arakawa
Also filed as: ARAKAWA KATSUJI
16 granted patents·4 pending applications·275 citations·filing 1998–2017
92Inventor score
Top patents by PatentIndex Score
20 records- 0194US6447107B1Printing head and ink jet recording apparatus using the sameSEIKO EPSON CORP·Filed 1998·Granted Sep 10, 2002·126 cites·13 claims
- 0291US6563079B1Method for machining work by laser beamSEIKO EPSON CORP·Filed 2000·Granted May 13, 2003·72 cites·17 claims
- 0386US7306744B2Method of manufacturing a nozzle plateSEIKO EPSON CORP·Filed 2005·Granted Dec 11, 2007·10 cites·20 claims
- 0480US7581824B2Electrostatic actuator, droplet discharge head and method for manufacturing the droplet discharge head, droplet discharge apparatus, and deviceSEIKO EPSON CORP·Filed 2005·Granted Sep 1, 2009·6 cites·17 claims
- 0578US9372337B2Wavelength variable interference filter, manufacturing method of wavelength variable interference filter, optical filter device, optical module, and electronic apparatusSEIKO EPSON CORP·Filed 2013·Granted Jun 21, 2016·4 cites·5 claims
- 0677US8746846B2Nozzle plate, discharge head, method for producing the nozzle plate, method for producing the discharge head, and discharge deviceARAKAWA KATSUJI·Filed 2010·Granted Jun 10, 2014·3 cites·6 claims
- 0777US7536785B2Method for manufacturing a droplet ejection headSEIKO EPSON CORP·Filed 2005·Granted May 26, 2009·5 cites·10 claims
- 0868US6677237B2Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for themSEIKO EPSON CORP·Filed 2002·Granted Jan 13, 2004·12 cites·17 claims
- 0957US6375310B1Ink jet head, manufacturing method therefor, and ink jet recording apparatusSEIKO EPSON CORP·Filed 1998·Granted Apr 23, 2002·16 cites·11 claims
- 1056US9170418B2Variable wavelength interference filter, optical module, optical analysis device, and method for manufacturing variable wavelength interference filterARAKAWA KATSUJI·Filed 2012·Granted Oct 27, 2015·1 cites·10 claims
- 1156US6424048B1Semiconductor chip, semiconductor device, circuit board and electronic equipment and production methods for themSEIKO EPSON CORP·Filed 1999·Granted Jul 23, 2002·18 cites·24 claims
- 1254US2014268344A1Interference filter, interference filter manufacturing method, optical module, electronic apparatus, and bonded substrateSEIKO EPSON CORP·Filed 2014·Application pending·0 cites
- 1350US11042023B2Wavelength variable interference filter having substrate hydroxyl group concentration, electronic component, manufacturing method of electronic component, and electronic apparatusSEIKO EPSON CORP·Filed 2017·Granted Jun 22, 2021·0 cites·14 claims
- 1446US7147795B2Method for surface treatmentSEIKO EPSON CORP·Filed 2004·Granted Dec 12, 2006·2 cites·19 claims
- 1541US7637601B2Droplet discharging head, droplet discharging apparatus, method for manufacturing droplet discharging head and method for manufacturing droplet discharging apparatusSEIKO EPSON CORP·Filed 2007·Granted Dec 29, 2009·0 cites·16 claims
- 1641US6989513B2Heat-generating element, heat-generating substrates, heat-generating substrate manufacturing method, microswitch, and flow sensorSEIKO EPSON CORP·Filed 2003·Granted Jan 24, 2006·0 cites·4 claims
- 1740US2007200877A1Method for producing nozzle substrate, method for producing droplet-discharging head, head for discharging droplets, and apparatus for discharging dropletsSEIKO EPSON CORP·Filed 2007·Application pending·0 cites
- 1838US2005115679A1Surface treatment apparatusFiled 2004·Application pending·0 cites
- 1936US2006232655A1Electrostatic actuator, liquid-jet head, liquid-jet apparatus, device including electrostatic actuator, method for manufacturing liquid-jet headFUJII MASAHIRO·Filed 2006·Application pending·0 cites
- 2035US8485640B2Nozzle plate, droplet discharge head, method for manufacturing the same and droplet discharge deviceOYA KAZUFUMI·Filed 2008·Granted Jul 16, 2013·0 cites·5 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →