Inventor · disambiguated record
Tatsuo Hara
Also filed as: HARA TATSUO · SHIMOGORI KAZUTOSHI
18 granted patents·3 pending applications·258 citations·filing 1978–2007
95Inventor score
Top patents by PatentIndex Score
21 records- 0187US6843594B1Spring, power spring, hair spring, driving mechanism utilizing them, and timepieceSEIKO EPSON CORP·Filed 1998·Granted Jan 18, 2005·36 cites·55 claims
- 0283US6339306B1Control device for stepper motor, control method for the same, and timing deviceSEIKO EPSON CORP·Filed 2000·Granted Jan 15, 2002·28 cites·54 claims
- 0380US6863435B2Spring, mainspring, hairspring, and driving mechanism and timepiece based thereonSEIKO EPSON CORP·Filed 2001·Granted Mar 8, 2005·26 cites·33 claims
- 0465US6194862B1Control device for stepper motor, control method for the same, and timing deviceSEIKO EPSON CORP·Filed 1998·Granted Feb 27, 2001·27 cites·88 claims
- 0561US6422739B1Mainspring device, timepiece, and method of controlling the mainspring device and the timepieceSEIKO EPSON CORP·Filed 1999·Granted Jul 23, 2002·13 cites·67 claims
- 0659US6439762B2Mainspring device and a winding protection structureSEIKO EPSON CORP·Filed 2001·Granted Aug 27, 2002·5 cites·19 claims
- 0758US5581519AAnalog indicator type electronic timepiece and charging method thereofSEIKO EPSON CORP·Filed 1995·Granted Dec 3, 1996·24 cites·33 claims
- 0856US7536779B2Method of manufacturing magnetic headSEIKO EPSON CORP·Filed 2005·Granted May 26, 2009·2 cites·23 claims
- 0956US6120177AElectronic watchSEIKO EPSON CORP·Filed 1998·Granted Sep 19, 2000·10 cites·14 claims
- 1052US6012838AElectronic watchSEIKO EPSON CORP·Filed 1996·Granted Jan 11, 2000·9 cites·28 claims
- 1151US6108279AStepping motor control device and method thereof and timepieceSEIKO EPSON CORP·Filed 1998·Granted Aug 22, 2000·16 cites·14 claims
- 1248US5053251AMethod for repairing glass-lined equipment by sol-gel processSHINKO PANTEC CO LTD·Filed 1990·Granted Oct 1, 1991·14 cites·15 claims
- 1347US6183125B1Electronic watchSEIKO EPSON CORP·Filed 1998·Granted Feb 6, 2001·9 cites·7 claims
- 1447US6097675AElectronically controlled mechanical timepieceSEIKO EPSON CORP·Filed 1998·Granted Aug 1, 2000·13 cites·13 claims
- 1544US2007133355A1Timepiece and spring thereofSEIK EPSON CORP·Filed 2004·Application pending·0 cites
- 1643US2008022511A1Method of manufacturing magnetic core, magnetic core, electromagnetic transducer, clock, and electronic deviceSEIKO EPSON CORP·Filed 2007·Application pending·0 cites
- 1741US2002191493A1Spring, drive mechanism, device and timepiece using the springFiled 2001·Application pending·0 cites
- 1839US4202751ASacrificial anode and apparatus employing same for treating hot sea waterKOBE STEEL LTD·Filed 1978·Granted May 13, 1980·8 cites·5 claims
- 1936US5143275AMethod for repairing a glass layer of glass-lined equipmentSHINKO PANTEC CO LTD·Filed 1991·Granted Sep 1, 1992·8 cites·16 claims
- 2034US6367966B1TimepieceSEIKO EPSON CORP·Filed 1999·Granted Apr 9, 2002·3 cites·38 claims
- 2130US5175414AMethod and apparatus for repairing glass-lined equipment by sol-gel processHARA TATSUO·Filed 1991·Granted Dec 29, 1992·7 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →