Inventor · disambiguated record
Yoshinori Hirai
Also filed as: HIRAI YOSHINORI
30 granted patents·2 pending applications·1,321 citations·filing 1989–2023
98Inventor score
Top patents by PatentIndex Score
32 records- 0197US5386306AActive matrix liquid crystal display element and projection type active matrix liquid crystal display deviceASAHI GLASS CO LTD·Filed 1992·Granted Jan 31, 1995·177 cites·13 claims
- 0297US5150232AActive matrix liquid crystal display element and projection type active matrix liquid crystal display deviceASAHI GLASS CO LTD·Filed 1989·Granted Sep 22, 1992·178 cites·24 claims
- 0395US9982014B2Tetrapeptide compound and method for producing sameKANEKA CORP·Filed 2014·Granted May 29, 2018·14 cites·11 claims
- 0489US5953002ADriving method for a liquid crystal display deviceASAHI GLASS CO LTD·Filed 1995·Granted Sep 14, 1999·105 cites·19 claims
- 0589US5754260AProjection type color liquid crystal optical apparatusAG TECHNOLOGY CORP·Filed 1997·Granted May 19, 1998·116 cites·20 claims
- 0689US5648860AProjection type color liquid crystal optical apparatusAG TECHNOLOGY CORP·Filed 1994·Granted Jul 15, 1997·96 cites·13 claims
- 0788US5235445ALiquid crystal optical element with liquid crystal in polymer matrix with particular modulus of elasticityAG TECHNOLOGY CORP·Filed 1992·Granted Aug 10, 1993·83 cites·20 claims
- 0886US5206746ATransparent-scattering type optical device including a prism with a triangular longitudinal cross sectionASAHI GLASS CO LTD·Filed 1991·Granted Apr 27, 1993·77 cites·20 claims
- 0980US6592430B1High-precision machining systemMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Jul 15, 2003·20 cites·26 claims
- 1076US5283675ALiquid crystal display element with electrode having concave-convex surface at liquid crystal sideAG TECHNOLOGY CORP·Filed 1992·Granted Feb 1, 1994·46 cites·32 claims
- 1171US5331446ALiquid crystal optical element and a laser projection apparatus using polymer dispersed liquid crystalAG TECHNOLOGY CORP·Filed 1993·Granted Jul 19, 1994·37 cites·23 claims
- 1269US5900857AMethod of driving a liquid crystal display device and a driving circuit for the liquid crystal display deviceASAHI GLASS CO LTD·Filed 1996·Granted May 4, 1999·37 cites·20 claims
- 1369US5264953ALiquid crystal display apparatus for providing a gray scale and a projection type liquid crystal display apparatusASAHI GLASS CO LTD·Filed 1991·Granted Nov 23, 1993·33 cites·31 claims
- 1469US5216531AProjection type active matrix polymer dispersed liquid crystal display apparatus with particles of liquid crystal material randomly orientedASAHI GLASS CO LTD·Filed 1991·Granted Jun 1, 1993·34 cites·19 claims
- 1569US5103327AActive matrix liquid crystal display element and a projection type active matrix liquid crystal display apparatusASAHI GLASS CO LTD·Filed 1991·Granted Apr 7, 1992·28 cites·20 claims
- 1668US5774101AMultiple line simultaneous selection method for a simple matrix LCD which uses temporal and spatial modulation to produce gray scale with reduced crosstalk and flickerASAHI GLASS CO LTD·Filed 1995·Granted Jun 30, 1998·35 cites·14 claims
- 1766US2023416281A1Method for producing (2-methylpyrimidin-5-yl)boronic acid derivativeKANEKA CORP·Filed 2023·Application pending·0 cites
- 1865US5196952ALiquid crystal display element and a projection type liquid crystal display apparatusAG TECHNOLOGY CORP·Filed 1992·Granted Mar 23, 1993·24 cites·20 claims
- 1963US5831586AMethod of driving a picture display deviceASAHI GLASS CO LTD·Filed 1995·Granted Nov 3, 1998·27 cites·11 claims
- 2058US5838404ADisplay device with optical member having two parts in overlay relation to reflect light incident at particular angleASAHI GLASS CO LTD·Filed 1995·Granted Nov 17, 1998·21 cites·3 claims
- 2157US5274480AProjection type display apparatus having an aperture stop means including non-circular openingsASAHI GLASS CO LTD·Filed 1991·Granted Dec 28, 1993·16 cites·12 claims
- 2256US6654082B1Liquid crystal display element and color display device having particular transflectorOPTREX KK·Filed 1999·Granted Nov 25, 2003·22 cites·11 claims
- 2356US5379137ALiquid crystal display element and a projection type liquid crystal display apparatusAG TECHNOLOGY CORP·Filed 1993·Granted Jan 3, 1995·17 cites·27 claims
- 2454US6017466ALiquid crystal optical element, liquid crystal display element and a projection type liquid crystal display apparatusAG TECHNOLOGY CORP·Filed 1996·Granted Jan 25, 2000·16 cites·13 claims
- 2551US7052370B2High-precision machining systemMITSUBISHI ELECTRIC CORP·Filed 2003·Granted May 30, 2006·3 cites·2 claims
- 2651US6018378ALiquid crystal/polymer composite with high optical anisotropy and low dielectric anisotropy to lower hysteresis exhibiting transparent and light scattering statesASAHI GLASS CO LTD·Filed 1997·Granted Jan 25, 2000·12 cites·13 claims
- 2750US6144373APicture display device and method of driving picture display deviceASAHI GLASS CO LTD·Filed 1997·Granted Nov 7, 2000·15 cites·10 claims
- 2850US2015315145A1Process for producing optically active bicyclic urea compoundKANEKA CORP·Filed 2013·Application pending·0 cites
- 2949US6122021ALiquid crystal display element and a projection type liquid crystal display apparatusASAHI GLASS CO LTD·Filed 1994·Granted Sep 19, 2000·13 cites·38 claims
- 3043US5734364AMethod of driving a picture display deviceASAHI GLASS CO LTD·Filed 1995·Granted Mar 31, 1998·10 cites·21 claims
- 3142US6346774B1Method of driving passive matrix liquid crystal displayOPTREX KK·Filed 1998·Granted Feb 12, 2002·9 cites·14 claims
- 3239US9096523B2Process for preparing cyclic amine compoundsHIRAI YOSHINORI·Filed 2012·Granted Aug 4, 2015·0 cites·10 claims
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