Sprague; Robert A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sprague; Robert A..The latest application filed is for "driving methods and circuit for bi-stable displays".
Company Profile
3.102.47
- Sprague; Robert A. - Saratoga CA
- Sprague; Robert A - Saratoga CA
- Sprague; Robert A. - Danvers MA
- Sprague; Robert A. - Chelmsford MA
- Sprague; Robert A. - North Chelmsford MA
- Sprague; Robert A. - Kensington CT
Patent Activity
| Patent | Date |
|---|---|
| Additive particles for improving optical performance of an electrophoretic display Grant 10,578,943 - Wang , et al. | 2020-03-03 |
| Driving methods and circuit for bi-stable displays Grant 10,535,312 - Sprague , et al. Ja | 2020-01-14 |
| Electrophoretic dispersion including charged pigment particles, uncharged additive nanoparticles, and uncharged neutral density particles Grant 10,288,975 - Sprague , et al. | 2019-05-14 |
| Driving Methods And Circuit For Bi-stable Displays App 20180277045 - SPRAGUE; Robert A. ; et al. | 2018-09-27 |
| Driving methods and circuit for bi-stable displays Grant 10,002,575 - Sprague , et al. June 19, 2 | 2018-06-19 |
| Electrophoretic Dispersion Including Charged Pigment Particles, Uncharged Additive Nanoparticles, And Uncharged Neutral Density Particles App 20180059500 - SPRAGUE; Robert A. ; et al. | 2018-03-01 |
| Additive Particles For Improving Optical Performance Of An Electrophoretic Display App 20170357137 - WANG; Ming ; et al. | 2017-12-14 |
| Electrophoretic dispersion Grant 9,835,926 - Sprague , et al. December 5, 2 | 2017-12-05 |
| Additive particles for improving optical performance of an electrophoretic display Grant 9,778,537 - Wang , et al. October 3, 2 | 2017-10-03 |
| Driving Methods And Waveforms For Electrophoretic Displays App 20160365022 - Sprague; Robert A ; et al. | 2016-12-15 |
| Driving Methods And Circuit For Bi-stable Displays App 20160335956 - SPRAGUE; Robert A. ; et al. | 2016-11-17 |
| Additive Particles For Improving Optical Performance Of An Electrophoretic Display App 20160139483 - Wang; Ming ; et al. | 2016-05-19 |
| Electrophoretic display design Grant 9,291,872 - Lin , et al. March 22, 2 | 2016-03-22 |
| Driving bistable displays Grant 9,171,508 - Sprague , et al. October 27, 2 | 2015-10-27 |
| Color Tuning For Electrophoretic Display Device App 20150301246 - ZANG; HongMei ; et al. | 2015-10-22 |
| Electrophoretic display with enhanced contrast Grant 9,140,952 - Sprague , et al. September 22, 2 | 2015-09-22 |
| Electrophoretic Dispersion App 20150248045 - SPRAGUE; Robert A. ; et al. | 2015-09-03 |
| Electrophoretic dispersion Grant 9,052,564 - Sprague , et al. June 9, 2 | 2015-06-09 |
| Composite display modules Grant 9,030,374 - Sprague , et al. May 12, 2 | 2015-05-12 |
| Driving methods for electrophoretic displays employing grey level waveforms Grant 9,019,318 - Sprague , et al. April 28, 2 | 2015-04-28 |
| Color electrophoretic display Grant 9,013,783 - Sprague April 21, 2 | 2015-04-21 |
| Color display devices Grant 8,976,444 - Zhang , et al. March 10, 2 | 2015-03-10 |
| Shutter mode for color display devices Grant 8,917,439 - Wang , et al. December 23, 2 | 2014-12-23 |
| Color Electrophoretic Display App 20140340737 - Sprague; Robert A. | 2014-11-20 |
| Driving Bistable Displays App 20140300651 - SPRAGUE; Robert A. ; et al. | 2014-10-09 |
| Color display devices Grant 8,810,899 - Sprague , et al. August 19, 2 | 2014-08-19 |
| Electronic information displays Grant 8,810,525 - Sprague August 19, 2 | 2014-08-19 |
| Display device assembly and manufacture thereof Grant 8,797,633 - Sprague , et al. August 5, 2 | 2014-08-05 |
| Highlight color display architecture using enhanced dark state Grant 8,797,258 - Sprague August 5, 2 | 2014-08-05 |
| Front light system for reflective displays Grant 8,743,077 - Sprague June 3, 2 | 2014-06-03 |
| Display devices with grooved luminance enhancement film Grant 8,714,780 - Ho , et al. May 6, 2 | 2014-05-06 |
| Color Display Devices App 20140078036 - ZHANG; Xiaojia ; et al. | 2014-03-20 |
| Electrophoretic Display Device App 20140078576 - Sprague; Robert A. | 2014-03-20 |
| Electrophoretic display fluid Grant 8,670,174 - Sprague , et al. March 11, 2 | 2014-03-11 |
| Color Tuning For Electrophoretic Display Device App 20140055840 - Zang; HongMei ; et al. | 2014-02-27 |
| Color display devices Grant 8,605,354 - Zhang , et al. December 10, 2 | 2013-12-10 |
| Spatially combined waveforms for electrophoretic displays Grant 8,576,164 - Sprague , et al. November 5, 2 | 2013-11-05 |
| Driving methods for electrophoretic displays Grant 8,558,855 - Sprague , et al. October 15, 2 | 2013-10-15 |
| Electrophoretic Dispersion App 20130250400 - SPRAGUE; Robert A. ; et al. | 2013-09-26 |
| Electrophoretic display with thermal control Grant 8,514,168 - Chung , et al. August 20, 2 | 2013-08-20 |
| Shutter Mode For Color Display Devices App 20130208338 - Wang; Ming ; et al. | 2013-08-15 |
| Multicolor display architecture using enhanced dark state Grant 8,503,063 - Sprague August 6, 2 | 2013-08-06 |
| Color Display Devices App 20130176612 - SPRAGUE; Robert A. ; et al. | 2013-07-11 |
| Display device assembly Grant 8,456,589 - Sprague , et al. June 4, 2 | 2013-06-04 |
| Color display devices Grant 8,422,116 - Sprague , et al. April 16, 2 | 2013-04-16 |
| Color Display Devices App 20130057463 - Zhang; Xiaojia ; et al. | 2013-03-07 |
| Display devices having micro-reflectors and color filters Grant 8,238,021 - Sprague , et al. August 7, 2 | 2012-08-07 |
| Display device with a brightness enhancement structure Grant 8,237,892 - Sprague , et al. August 7, 2 | 2012-08-07 |
| Electrophoretic Display Fluid App 20120134010 - Sprague; Robert A. ; et al. | 2012-05-31 |
| Color display devices Grant 8,169,690 - Lin , et al. May 1, 2 | 2012-05-01 |
| Electrophoretic display structures Grant 8,154,790 - Wang , et al. April 10, 2 | 2012-04-10 |
| Inhaler that uses focused acoustic waves to deliver a pharmaceutical product Grant 8,122,880 - Noolandi , et al. February 28, 2 | 2012-02-28 |
| Luminance enhancement structure for reflective display devices Grant 8,120,836 - Lin , et al. February 21, 2 | 2012-02-21 |
| Color display devices Grant 8,072,675 - Lin , et al. December 6, 2 | 2011-12-06 |
| Composite Display Modules App 20110273363 - Sprague; Robert A. ; et al. | 2011-11-10 |
| Electrophoretic Display With Enhanced Contrast App 20110261433 - Sprague; Robert A. ; et al. | 2011-10-27 |
| Electrophoretic Display Fluid App 20110217639 - Sprague; Robert A. | 2011-09-08 |
| Color display devices Grant 7,982,941 - Lin , et al. July 19, 2 | 2011-07-19 |
| Spatially Combined Waveforms For Electrophoretic Displays App 20110096104 - Sprague; Robert A. ; et al. | 2011-04-28 |
| Electronic Information Displays App 20110080362 - Sprague; Robert A. | 2011-04-07 |
| Display Devices Having Micro-reflectors And Color Filters App 20110043894 - Sprague; Robert A. ; et al. | 2011-02-24 |
| Color Tuning For Electrophoretic Display App 20110043543 - Chen; Hui ; et al. | 2011-02-24 |
| Driving Methods For Electrophoretic Displays App 20100295880 - Sprague; Robert A. ; et al. | 2010-11-25 |
| Display devices having micro-reflectors Grant 7,830,592 - Sprague , et al. November 9, 2 | 2010-11-09 |
| Reflective Display Devices With Luminance Enhancement Film App 20100271407 - Ho; Andrew ; et al. | 2010-10-28 |
| Luminance Enhancement Structure For Reflective Display Devices App 20100225999 - Lin; Craig ; et al. | 2010-09-09 |
| Highlight Color Display Architecture Using Enhanced Dark State App 20100165005 - Sprague; Robert A. | 2010-07-01 |
| Multicolor Display Architecture Using Enhanced Dark State App 20100165448 - Sprague; Robert A. | 2010-07-01 |
| Driving Methods For Electrophoretic Displays App 20100134538 - Sprague; Robert A. ; et al. | 2010-06-03 |
| Electrophoretic Display Structures App 20100103501 - WANG; Xiaojia ; et al. | 2010-04-29 |
| Color Display Devices App 20100053728 - Lin; Craig ; et al. | 2010-03-04 |
| Electric writable media Grant 7,671,834 - Sprague March 2, 2 | 2010-03-02 |
| Color Display Devices App 20090273827 - Lin; Craig ; et al. | 2009-11-05 |
| Color Display Devices App 20090251763 - SPRAGUE; Robert A. ; et al. | 2009-10-08 |
| Color Display Devices App 20090213452 - LIN; Craig ; et al. | 2009-08-27 |
| Approach To Adjust Driving Waveforms For A Display Device App 20090096745 - Sprague; Robert A. ; et al. | 2009-04-16 |
| Stylus writing architectures for erasable paper Grant 7,479,942 - Sprague , et al. January 20, 2 | 2009-01-20 |
| Electrophoretic Display With Thermal Control App 20080218471 - Chung; Jerry ; et al. | 2008-09-11 |
| Direction signage system Grant 7,375,634 - Sprague May 20, 2 | 2008-05-20 |
| Direction signage system App 20070030152 - Sprague; Robert A. | 2007-02-08 |
| Electric writable media App 20070030252 - Sprague; Robert A. | 2007-02-08 |
| Method of using focused acoustic waves to deliver a pharmaceutical product Grant 7,121,275 - Noolandi , et al. October 17, 2 | 2006-10-17 |
| Stylus writing architectures for erasable paper App 20040263470 - Sprague, Robert A. ; et al. | 2004-12-30 |
| Display material for electric paper and applications thereof Grant 6,795,228 - Sacripante , et al. September 21, 2 | 2004-09-21 |
| Display material for electric paper and applications thereof App 20030112490 - Sacripante, Guerino G. ; et al. | 2003-06-19 |
| Quality control mechanism and process for a biofluid multi-ejector system Grant 6,514,704 - Bruce , et al. February 4, 2 | 2003-02-04 |
| Quality control mechanism and process for a biofluid multi-ejector system App 20020102555 - Bruce, Richard H. ; et al. | 2002-08-01 |
| Inhaler that uses focused acoustic waves to deliver a pharmaceutical product App 20020073990 - Noolandi, Jaan ; et al. | 2002-06-20 |
| Method of using focused acoustic waves to deliver a pharmaceutical product App 20020077369 - Noolandi, Jaan ; et al. | 2002-06-20 |
| Nonspecular visual display and method Grant 6,396,205 - Sprague May 28, 2 | 2002-05-28 |
| Charge retention islands for electric paper and applications thereof Grant 6,222,513 - Howard , et al. April 24, 2 | 2001-04-24 |
| Paper property sensing system Grant 5,934,140 - Jackson , et al. August 10, 1 | 1999-08-10 |
| Flexible object handling system using feedback controlled air jets Grant 5,634,636 - Jackson , et al. June 3, 1 | 1997-06-03 |
| Bound document imager with air jet page turning system Grant 5,612,791 - Turner , et al. March 18, 1 | 1997-03-18 |
| Full color display with plural two-dimensional planar arrays of lenslets Grant 5,550,656 - Sprague , et al. August 27, 1 | 1996-08-27 |
| Large screen full color display with plural adjacent display panels and enlarging graded index lens array Grant 5,504,598 - Sprague , et al. April 2, 1 | 1996-04-02 |
| Full color display with gradient index lens array disposed between phosphor emitters and liquid crystal display Grant 5,504,597 - Sprague , et al. April 2, 1 | 1996-04-02 |
| Two path liquid crystal light valve color display with light coupling lens array disposed along the red-green light path Grant 5,315,418 - Sprague , et al. May 24, 1 | 1994-05-24 |
| Method and apparatus for projecting a color image Grant 5,264,880 - Sprague , et al. November 23, 1 | 1993-11-23 |
| Temperature controlled light source for interlaced printer Grant 5,138,340 - Sprague , et al. August 11, 1 | 1992-08-11 |
| Superluminescent LED source Grant 4,730,331 - Burnham , et al. March 8, 1 | 1988-03-08 |
| High density block oriented solid state optical memories Grant 4,663,738 - Sprague , et al. May 5, 1 | 1987-05-05 |
| Laser cavity optical system for stabilizing the beam from a phase locked multi-emitter broad emitter laser Grant 4,656,641 - Scifres , et al. April 7, 1 | 1987-04-07 |
| Electro-optic line printer with super luminescent LED source Grant 4,638,334 - Burnham , et al. January 20, 1 | 1987-01-20 |
| Eraseable solid state optical memories Grant 4,633,445 - Sprague December 30, 1 | 1986-12-30 |
| Method for the dispersion of hard alpha defects in ingots of titanium or titanium alloy and ingots produced thereby Grant 4,622,079 - Chang , et al. November 11, 1 | 1986-11-11 |
| Two dimensional electro-optic modulator for optical processing Grant 4,557,563 - Sprague December 10, 1 | 1985-12-10 |
| Conformable electrodes for proximity coupled electro-optic devices Grant 4,538,883 - Sprague , et al. September 3, 1 | 1985-09-03 |
| Beam collimation and focusing of multi-emitter or broad emitter lasers Grant 4,530,574 - Scifres , et al. July 23, 1 | 1985-07-23 |
| Direct read after write optical disk system Grant 4,517,667 - Sprague May 14, 1 | 1985-05-14 |
| Variable length electro-optic waveguides and applications therefor Grant 4,478,483 - Sprague October 23, 1 | 1984-10-23 |
| Differential encoding for fringe field responsive electro-optic line printers Grant 4,450,459 - Turner , et al. May 22, 1 | 1984-05-22 |
| Multi-beam optical system using lens array Grant 4,428,647 - Sprague , et al. January 31, 1 | 1984-01-31 |
| Extended thin film light modulator/scanner Grant 4,421,387 - Sprague December 20, 1 | 1983-12-20 |
| Multigate light valve for electro-optic line printers having non-telecentric imaging systems Grant 4,413,270 - Sprague November 1, 1 | 1983-11-01 |
| Optical cursor control device Grant 4,409,479 - Sprague , et al. October 11, 1 | 1983-10-11 |
| Electrooptical scanning device Grant 4,386,827 - Scifres , et al. June 7, 1 | 1983-06-07 |
| Conformable proximity coupled electro-optic devices Grant 4,380,373 - Sprague April 19, 1 | 1983-04-19 |
| Thick film line modulator Grant 4,376,568 - Sprague March 15, 1 | 1983-03-15 |
| Extended resolution light deflector using surface acoustic waves Grant 4,370,030 - Sprague January 25, 1 | 1983-01-25 |
| Dielectric interface for proximity coupled electro-optic devices Grant 4,370,029 - Sprague , et al. January 25, 1 | 1983-01-25 |
| Integrated electronics for proximity coupled electro-optic devices Grant 4,367,925 - Sprague , et al. January 11, 1 | 1983-01-11 |
| Light modulator/deflector using acoustic surface waves Grant 4,346,965 - Sprague , et al. August 31, 1 | 1982-08-31 |
| TIR Electro-optic modulator with individually addressed electrodes Grant 4,281,904 - Sprague , et al. August 4, 1 | 1981-08-04 |
| High resolution input scanner using a two dimensional detector array Grant 4,204,230 - Sprague May 20, 1 | 1980-05-20 |
| Acousto-optic snapshot recorder Grant 4,107,701 - Sprague , et al. August 15, 1 | 1978-08-15 |
| Method and apparatus for detecting cosmetic defects in opthalmic lenses Grant 3,988,068 - Sprague October 26, 1 | 1976-10-26 |
| Method and apparatus for testing lenses Grant 3,877,788 - Sprague , et al. April 15, 1 | 1975-04-15 |
| Optical Device For Measuring Surface Roughness Grant 3,804,521 - Sprague April 16, 1 | 1974-04-16 |
| Method For Diffusion Bonding Utilizing Superplastic Interlayer Grant 3,713,207 - Ruckle , et al. January 30, 1 | 1973-01-30 |
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