Inventor · disambiguated record
Robert A. Sprague
Also filed as: SPRAGUE ROBERT · SPRAGUE ROBERT A · SPRAGUE ROBERT ARTHUR
130 granted patents·7 pending applications·7,080 citations·filing 1974–2021
99Inventor score
Top patents by PatentIndex Score
137 records- 0199US9568800B1Thin border displaysAMAZON TECH INC·Filed 2015·Granted Feb 14, 2017·57 cites·20 claims
- 0299US9013783B2Color electrophoretic displayE INK CALIFORNIA LLC·Filed 2014·Granted Apr 21, 2015·117 cites·20 claims
- 0399US8976444B2Color display devicesSIPIX IMAGING INC·Filed 2013·Granted Mar 10, 2015·157 cites·2 claims
- 0499US8810525B2Electronic information displaysSPRAGUE ROBERT A·Filed 2010·Granted Aug 19, 2014·140 cites·16 claims
- 0599US8810899B2Color display devicesSIPIX IMAGING INC·Filed 2013·Granted Aug 19, 2014·97 cites·12 claims
- 0699US8670174B2Electrophoretic display fluidSPRAGUE ROBERT A·Filed 2011·Granted Mar 11, 2014·138 cites·16 claims
- 0799US8503063B2Multicolor display architecture using enhanced dark stateSPRAGUE ROBERT A·Filed 2009·Granted Aug 6, 2013·123 cites·17 claims
- 0899US8422116B2Color display devicesSPRAGUE ROBERT A·Filed 2009·Granted Apr 16, 2013·133 cites·25 claims
- 0999US8237892B1Display device with a brightness enhancement structureSPRAGUE ROBERT A·Filed 2008·Granted Aug 7, 2012·90 cites·17 claims
- 1099US8072675B2Color display devicesLIN CRAIG·Filed 2009·Granted Dec 6, 2011·95 cites·23 claims
- 1199US7982941B2Color display devicesSIPIX IMAGING INC·Filed 2009·Granted Jul 19, 2011·143 cites·22 claims
- 1299US7830592B1Display devices having micro-reflectorsSIPIX IMAGING INC·Filed 2008·Granted Nov 9, 2010·100 cites·21 claims
- 1399US5634636AFlexible object handling system using feedback controlled air jetsXEROX CORP·Filed 1996·Granted Jun 3, 1997·145 cites·6 claims
- 1498US11815746B1Method and apparatus for astigmatic correction in electronically tunable prescription glassesAMAZON TECH INC·Filed 2021·Granted Nov 14, 2023·8 cites·20 claims
- 1598US9835926B2Electrophoretic dispersionE INK CALIFORNIA LLC·Filed 2015·Granted Dec 5, 2017·33 cites·14 claims
- 1698US9460666B2Driving methods and waveforms for electrophoretic displaysSPRAGUE ROBERT·Filed 2010·Granted Oct 4, 2016·108 cites·7 claims
- 1798US9373289B2Driving methods and circuit for bi-stable displaysSPRAGUE ROBERT·Filed 2012·Granted Jun 21, 2016·109 cites·6 claims
- 1898US9171508B2Driving bistable displaysSIPIX IMAGING INC·Filed 2014·Granted Oct 27, 2015·109 cites·19 claims
- 1998US9140952B2Electrophoretic display with enhanced contrastSPRAGUE ROBERT A·Filed 2011·Granted Sep 22, 2015·54 cites·8 claims
- 2098US9052564B2Electrophoretic dispersionSIPIX IMAGING INC·Filed 2013·Granted Jun 9, 2015·70 cites·16 claims
- 2198US9019318B2Driving methods for electrophoretic displays employing grey level waveformsSPRAGUE ROBERT A·Filed 2010·Granted Apr 28, 2015·145 cites·14 claims
- 2298US8797258B2Highlight color display architecture using enhanced dark stateSPRAGUE ROBERT A·Filed 2009·Granted Aug 5, 2014·63 cites·12 claims
- 2398US8786935B2Color electrophoretic displaySPRAGUE ROBERT·Filed 2012·Granted Jul 22, 2014·123 cites·20 claims
- 2498US8730153B2Driving bistable displaysSPRAGUE ROBERT·Filed 2012·Granted May 20, 2014·108 cites·44 claims
- 2598US8649084B2Color display devicesWANG XIAOJIA·Filed 2011·Granted Feb 11, 2014·122 cites·11 claims
- 2698US8605354B2Color display devicesZHANG XIAOJIA·Filed 2012·Granted Dec 10, 2013·125 cites·19 claims
- 2798US8576164B2Spatially combined waveforms for electrophoretic displaysSPRAGUE ROBERT A·Filed 2010·Granted Nov 5, 2013·152 cites·14 claims
- 2898US8558855B2Driving methods for electrophoretic displaysSPRAGUE ROBERT A·Filed 2009·Granted Oct 15, 2013·156 cites·4 claims
- 2998US8514168B2Electrophoretic display with thermal controlCHUNG JERRY·Filed 2007·Granted Aug 20, 2013·151 cites·14 claims
- 3098US8243013B1Driving bistable displaysSPRAGUE ROBERT·Filed 2008·Granted Aug 14, 2012·190 cites·41 claims
- 3198US8169690B2Color display devicesLIN CRAIG·Filed 2009·Granted May 1, 2012·63 cites·23 claims
- 3298US8120836B2Luminance enhancement structure for reflective display devicesLIN CRAIG·Filed 2010·Granted Feb 21, 2012·40 cites·16 claims
- 3398US6222513B1Charge retention islands for electric paper and applications thereofXEROX CORP·Filed 1998·Granted Apr 24, 2001·209 cites·98 claims
- 3497US11442332B1Tunable liquid crystal lens with electrically tunable axis of astigmatismAMAZON TECH INC·Filed 2020·Granted Sep 13, 2022·16 cites·20 claims
- 3597US10627694B1Hybrid displays including electrophoretic displays and light emitting diodesAMAZON TECH INC·Filed 2017·Granted Apr 21, 2020·22 cites·20 claims
- 3697US9778537B2Additive particles for improving optical performance of an electrophoretic displayE INK CALIFORNIA LLC·Filed 2016·Granted Oct 3, 2017·37 cites·8 claims
- 3797US9423666B2Additive for improving optical performance of an electrophoretic displayE INK CALIFORNIA LLC·Filed 2014·Granted Aug 23, 2016·134 cites·16 claims
- 3897US9291872B1Electrophoretic display designSIPIX IMAGING INC·Filed 2013·Granted Mar 22, 2016·27 cites·4 claims
- 3997US9030374B2Composite display modulesSPRAGUE ROBERT A·Filed 2011·Granted May 12, 2015·38 cites·8 claims
- 4097US8917439B2Shutter mode for color display devicesWANG MING·Filed 2012·Granted Dec 23, 2014·136 cites·21 claims
- 4197US8902491B2Additive for improving optical performance of an electrophoretic displayWANG MING·Filed 2011·Granted Dec 2, 2014·160 cites·21 claims
- 4297US8238021B2Display devices having micro-reflectors and color filtersSPRAGUE ROBERT A·Filed 2010·Granted Aug 7, 2012·28 cites·5 claims
- 4397US8154790B2Electrophoretic display structuresWANG XIAOJIA·Filed 2009·Granted Apr 10, 2012·38 cites·20 claims
- 4497US7375634B2Direction signage systemXEROX CORP·Filed 2005·Granted May 20, 2008·59 cites·25 claims
- 4597US5315418ATwo path liquid crystal light valve color display with light coupling lens array disposed along the red-green light pathXEROX CORP·Filed 1992·Granted May 24, 1994·225 cites·19 claims
- 4697US3988068AMethod and apparatus for detecting cosmetic defects in opthalmic lensesITEK CORP·Filed 1974·Granted Oct 26, 1976·81 cites·25 claims
- 4796US8797633B1Display device assembly and manufacture thereofSPRAGUE ROBERT A·Filed 2010·Granted Aug 5, 2014·39 cites·5 claims
- 4896US8462102B2Driving methods for bistable displaysWONG JIALOCK·Filed 2009·Granted Jun 11, 2013·152 cites·11 claims
- 4996US8456589B1Display device assemblySPRAGUE ROBERT A·Filed 2010·Granted Jun 4, 2013·39 cites·13 claims
- 5096US8274472B1Driving methods for bistable displaysWANG WANHENG·Filed 2008·Granted Sep 25, 2012·164 cites·12 claims
Showing the top 50 of 137 patent records by PatentIndex Score.
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