Inventor · disambiguated record
Sadakazu Shiga
Also filed as: SHIGA SADAKAZU
16 granted patents·4 pending applications·256 citations·filing 1988–2021
94Inventor score
Top patents by PatentIndex Score
20 records- 0172US6963984B2Computer power supply startup apparatusALPS ELECTRIC CO LTD·Filed 2001·Granted Nov 8, 2005·19 cites·4 claims
- 0268US5448236AN-key rollover circuitALPS ELECTRIC CO LTD·Filed 1994·Granted Sep 5, 1995·27 cites·7 claims
- 0358US6072126APrinted wiring board with grounding lines arranged between wiring linesALPS ELECTRONICS CO LTD·Filed 1997·Granted Jun 6, 2000·21 cites·3 claims
- 0458US5877749AOperation inputting apparatusALPS ELECTRIC CO LTD·Filed 1997·Granted Mar 2, 1999·33 cites·2 claims
- 0557US6847031B2Intermittent operating type pointing deviceALPS ELECTRIC CO LTD·Filed 2002·Granted Jan 25, 2005·5 cites·6 claims
- 0656US6625738B1USB apparatus that turns on computer power supply using signals substantially longer than information conveying pulse widths when predetermined operation is performed on input deviceALPS ELECTRIC CO LTD·Filed 1999·Granted Sep 23, 2003·32 cites·81 claims
- 0756US6072472AKeyboard with power saving function and data storage capabilitiesALPS ELECTRIC CO LTD·Filed 1997·Granted Jun 6, 2000·33 cites·2 claims
- 0853US4922248AKey output method for keyboardsALPS ELECTRIC CO LTD·Filed 1988·Granted May 1, 1990·13 cites·2 claims
- 0951US6522283B1Wireless keyboardALPS ELECTRIC CO LTD·Filed 1999·Granted Feb 18, 2003·24 cites·5 claims
- 1048US2009211818A1Input deviceKONDO TAKASHI·Filed 2009·Application pending·0 cites
- 1147US11275477B2Input deviceALPS ALPINE CO LTD·Filed 2021·Granted Mar 15, 2022·0 cites·15 claims
- 1247US2014362038A1Touch pad with antennaALPS ELECTRIC CO LTD·Filed 2014·Application pending·0 cites
- 1344US5859599AKeyboardALPS ELECTRIC CO LTD·Filed 1997·Granted Jan 12, 1999·16 cites·4 claims
- 1440US2010259495A1Input deviceALPS ELECTRIC CO LTD·Filed 2010·Application pending·0 cites
- 1539US5680154AOperation inputting apparatusALPS ELECTRIC CO LTD·Filed 1995·Granted Oct 21, 1997·12 cites·3 claims
- 1639US2010271301A1Input processing deviceALPS ELECTRIC CO LTD·Filed 2010·Application pending·0 cites
- 1737US6144369ASignal processing systemALPS ELECTRIC CO LTD·Filed 1998·Granted Nov 7, 2000·10 cites·11 claims
- 1832US6201605B1Optical detecting apparatus and coordinate inputting apparatus using the detecting apparatusALPS ELECTRIC CO LTD·Filed 1998·Granted Mar 13, 2001·5 cites·11 claims
- 1930US5570110AOperational input apparatusALPS ELECTRIC CO LTD·Filed 1995·Granted Oct 29, 1996·4 cites·2 claims
- 2029US5907718ASignal processing system for transmission of data between a keyboard and a signal processing unitALPS ELECTRIC CO LTD·Filed 1997·Granted May 25, 1999·2 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →