Inventor · disambiguated record
Shunji Umemura
Also filed as: UMEMURA SHUNJI
17 granted patents·319 citations·filing 1985–2004
95Inventor score
Top patents by PatentIndex Score
17 records- 0186US6244698B1Printhead unit and ink cartridgeSEIKO EPSON CORP·Filed 1998·Granted Jun 12, 2001·60 cites·21 claims
- 0284US7061699B2Projection lens, producing method of projection lens and projector having projection lensSEIKO EPSON CORP·Filed 2003·Granted Jun 13, 2006·30 cites·28 claims
- 0381US6283587B1Printer ink cartridge and ink cartridge device including the sameSEIKO EPSON CORP·Filed 1999·Granted Sep 4, 2001·42 cites·15 claims
- 0478US6286946B1Ink cartridge deviceSEIKO EPSON CORP·Filed 1999·Granted Sep 11, 2001·34 cites·6 claims
- 0578US6220701B1Ink cartridge and method of disassembling the sameSEIKO EPSON CORP·Filed 1999·Granted Apr 24, 2001·38 cites·11 claims
- 0673US6760096B2Lens-evaluating method and lens-evaluating apparatusSEIKO EPSON CORP·Filed 2002·Granted Jul 6, 2004·15 cites·13 claims
- 0773US4694330AColor correction circuitSONY CORP·Filed 1985·Granted Sep 15, 1987·27 cites·8 claims
- 0867US6829111B2Projection lens manufacturing apparatus, projection lens manufacturing method, projection lens manufactured by the projection lens manufacturing method and projector having the projection lensSEIKO EPSON CORP·Filed 2003·Granted Dec 7, 2004·12 cites·15 claims
- 0962US6412933B2Ink cartridge deviceSEIKO EPSON CORP·Filed 2001·Granted Jul 2, 2002·8 cites·9 claims
- 1060US6760097B2Lens evaluation method and lens-evaluating apparatusSEIKO EPSON CORP·Filed 2001·Granted Jul 6, 2004·7 cites·8 claims
- 1155US6502932B1Print head device and ink jet printer including the print head deviceSEIKO EPSON CORP·Filed 2000·Granted Jan 7, 2003·6 cites·8 claims
- 1252US6989894B2Lens evaluation method and lens-evaluating apparatusSEIKO EPSON CORP·Filed 2004·Granted Jan 24, 2006·4 cites·6 claims
- 1351US6674481B1Display apparatus, marker signal making process, marker signal detector circuit, and control signal generator circuitSONY CORP·Filed 1999·Granted Jan 6, 2004·14 cites·7 claims
- 1440US6292216B1Control signal generating circuitSONY CORP·Filed 1999·Granted Sep 18, 2001·8 cites·4 claims
- 1540US6250745B1Ink cartridge for printersSEIKO EPSON CORP·Filed 1997·Granted Jun 26, 2001·7 cites·13 claims
- 1635US5926058AAperture compensation circuit and RGB monitorSONY CORP·Filed 1997·Granted Jul 20, 1999·4 cites·11 claims
- 1729US5331352AContrast control wherein reference pulse detection occurs every other line period and wherein clamping occurs in remaining line periodsSONY CORP·Filed 1993·Granted Jul 19, 1994·3 cites·7 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →