Inventor · disambiguated record
Takashi Niwa
Also filed as: NIWA TAKASHI
112 granted patents·11 pending applications·1,532 citations·filing 1976–2024
99Inventor score
Files withSEIKO INSTR INC65OMRON TATEISI ELECTRONICS CO18MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9KODA MASAYUKI4AISIN SEIKI2
Top patents by PatentIndex Score
123 records- 0199US7015455B2Near-field optical probeSEIKO INSTR INC·Filed 2005·Granted Mar 21, 2006·110 cites·4 claims
- 0295US6724718B1Near field optical head and method for manufacturing thereofSEIKO INSTR INC·Filed 2000·Granted Apr 20, 2004·63 cites·42 claims
- 0394US8702301B2Timepiece bearing, movement, and portable timepieceHIRAOKA MASASHI·Filed 2010·Granted Apr 22, 2014·18 cites·25 claims
- 0494US6370306B1Optical waveguide probe and its manufacturing methodSEIKO INSTR INC·Filed 1998·Granted Apr 9, 2002·156 cites·54 claims
- 0593US9753433B2Mechanical component, movement, and timepieceSEIKO INSTR INC·Filed 2015·Granted Sep 5, 2017·6 cites·18 claims
- 0693US9678477B2Mechanical component, mechanical component manufacturing method, movement, and timepieceSEIKO INSTR INC·Filed 2015·Granted Jun 13, 2017·7 cites·16 claims
- 0793US7887995B2Electroforming mold and method for manufacturing the same, and method for manufacturing electroformed componentSEIKO INSTR INC·Filed 2006·Granted Feb 15, 2011·14 cites·37 claims
- 0892US8021534B2Electroforming mold and method for manufacturing the same, and method for manufacturing electroformed componentSEIKO INSTR INC·Filed 2010·Granted Sep 20, 2011·7 cites·37 claims
- 0992US7599277B1Near-field optical head having tapered hole for guiding light beamSEIKO INSTR INC·Filed 1999·Granted Oct 6, 2009·59 cites·5 claims
- 1090US8591101B2Escapement governor, mechanical watch, pallet fork (incomplete) manufacturing method, and roller manufacturing methodHIRAOKA MASASHI·Filed 2010·Granted Nov 26, 2013·12 cites·17 claims
- 1190US6307167B1Key switchOMRON TATEISI ELECTRONICS CO·Filed 1999·Granted Oct 23, 2001·68 cites·9 claims
- 1288US6165336AGas sensorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Dec 26, 2000·86 cites·32 claims
- 1387US9188956B2Balance, timepiece movement, timepiece and manufacturing method of balanceSEIKO INSTR INC·Filed 2013·Granted Nov 17, 2015·6 cites·18 claims
- 1486US9665069B2Electric generator device, timepiece movement, and timepieceASAHI GLASS CO LTD·Filed 2016·Granted May 30, 2017·6 cites·20 claims
- 1586US9128465B2Balance with hairspring, movement, and timepieceSEIKO INSTR INC·Filed 2014·Granted Sep 8, 2015·5 cites·20 claims
- 1686US6631227B2Information recording and reproducing apparatusSEIKO INSTR INC·Filed 2001·Granted Oct 7, 2003·21 cites·27 claims
- 1785US4092512ATurntable drive mechanism in electronic ovenMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1976·Granted May 30, 1978·40 cites·22 claims
- 1884US8320228B2Near-field optical head having tapered hole for guiding light beamKATO KENJI·Filed 2009·Granted Nov 27, 2012·4 cites·16 claims
- 1984US7630287B2Near field optical head and optical recording deviceSEIKO INSTR INC·Filed 2006·Granted Dec 8, 2009·4 cites·18 claims
- 2084US6567373B1Optical headSEIKO INSTR INC·Filed 2000·Granted May 20, 2003·19 cites·24 claims
- 2183US7032427B2Method for forming optical aperture, near-field optical head, method for fabricating near-field optical head, and information recording/reading apparatusSEIKO INSTR INC·Filed 2001·Granted Apr 25, 2006·29 cites·16 claims
- 2283US6881947B2Near-field optical probeSEIKO INSTR INC·Filed 2003·Granted Apr 19, 2005·12 cites·8 claims
- 2383US6720508B2Door switchesOMRON TATEISI ELECTRONICS CO·Filed 2002·Granted Apr 13, 2004·30 cites·18 claims
- 2483US4873402APush-button switch with plunger and switching mechanismOMRON TATEISI ELECTRONICS CO·Filed 1988·Granted Oct 10, 1989·23 cites·3 claims
- 2582US6528780B1Optical probe for proximity fieldSEIKO INSTR INC·Filed 1999·Granted Mar 4, 2003·53 cites·20 claims
- 2680US6473384B1Near field optical head having flexible structureSEIKO INSTR INC·Filed 2000·Granted Oct 29, 2002·14 cites·23 claims
- 2780US4968860ALight emitting type push button switchOMRON TATEISI ELECTRONICS CO·Filed 1989·Granted Nov 6, 1990·21 cites·8 claims
- 2879US9568887B2Operation stabilizing mechanism, movement, and mechanical timepieceSEIKO INSTR INC·Filed 2016·Granted Feb 14, 2017·2 cites·17 claims
- 2979US6842558B2Optical switch manufacturing method thereofSEIKO INSTR INC·Filed 2002·Granted Jan 11, 2005·21 cites·22 claims
- 3078US7240541B2Optical microcantilever, manufacturing method thereof, and optical microcantilever holderSEIKO INSTR INC·Filed 2006·Granted Jul 10, 2007·4 cites·15 claims
- 3177US8518632B2Method of manufacturing electroforming mold, electroforming mold, and method of manufacturing electroformed componentNIWA TAKASHI·Filed 2007·Granted Aug 27, 2013·2 cites·21 claims
- 3277US5017747AMicroswitchOMRON TATEISI ELECTRONICS CO·Filed 1990·Granted May 21, 1991·32 cites·5 claims
- 3377US4908485APush-button switchOMRON TATEISI ELECTRONICS CO·Filed 1989·Granted Mar 13, 1990·21 cites·19 claims
- 3476US8491183B2Detent escapement for timepiece and mechanical timepieceKODA MASAYUKI·Filed 2011·Granted Jul 23, 2013·4 cites·16 claims
- 3576US6834537B1Optical microcantileverSEIKO INSTR INC·Filed 2000·Granted Dec 28, 2004·16 cites·22 claims
- 3675US9310772B2Metal structure, method of manufacturing metal structure, spring component, chronograph coupling lever for timepiece, and timepieceSEIKO INSTR INC·Filed 2014·Granted Apr 12, 2016·1 cites·19 claims
- 3775US6466537B1Recording apparatusSEIKO INSTR INC·Filed 1999·Granted Oct 15, 2002·17 cites·12 claims
- 3875US4904832AMicroswitchOMRON TATEISI ELECTRONICS CO·Filed 1988·Granted Feb 27, 1990·22 cites·4 claims
- 3974US7301888B2Recording apparatusSEIKO INSTR INC·Filed 2006·Granted Nov 27, 2007·1 cites·12 claims
- 4074US6785201B2Optical information recording and reading apparatusSEIKO INSTR INC·Filed 2002·Granted Aug 31, 2004·11 cites·9 claims
- 4172US6738338B1Near-field optical head, method of fabricating same, and optical drive using sameSEIKO INSTR INC·Filed 2000·Granted May 18, 2004·17 cites·27 claims
- 4271US6768095B2Near-field optical probe having cantilever and probe formed of transparent material, method for manufacturing near-field optical probe, and optical apparatus having near-field optical probeSEIKO INSTR R & D CT INC·Filed 2000·Granted Jul 27, 2004·19 cites·11 claims
- 4370US9052693B2Constant force device, movement and mechanical timepieceSEIKO INSTR INC·Filed 2014·Granted Jun 9, 2015·2 cites·20 claims
- 4469US8787128B2Near-field optical head having tapered hole for guiding light beamICHIHARA KAZUKO·Filed 2012·Granted Jul 22, 2014·2 cites·16 claims
- 4569US5165530ALight emitting type push button switchOMRON TATEISI ELECTRONICS CO·Filed 1991·Granted Nov 24, 1992·18 cites·7 claims
- 4669US5072085AIlluminated push-button switchOMRON TATEISI ELECTRONICS CO·Filed 1990·Granted Dec 10, 1991·18 cites·5 claims
- 4768US9045832B2Manufacturing method of timepiece part and timepiece partMURAZUMI TAKUYA·Filed 2011·Granted Jun 2, 2015·3 cites·7 claims
- 4868US7034277B2Near-field light-generating element for producing localized near-field light, near-field optical recording device, and near-field optical microscopeSEIKO INSTR INC·Filed 2002·Granted Apr 25, 2006·15 cites·51 claims
- 4968US6697322B2Recording medium, optical recording device utilizing recording medium, and method of manufacturing recording mediumSEIKO INSTR INC·Filed 2001·Granted Feb 24, 2004·5 cites·21 claims
- 5068US4933523APush-button switchOMRON TATEISI ELECTRONICS CO·Filed 1988·Granted Jun 12, 1990·16 cites·8 claims
Showing the top 50 of 123 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →