Inventor · disambiguated record
Hisao Yokokura
Also filed as: YOKOKURA HISAO
29 granted patents·491 citations·filing 1976–2007
97Inventor score
Files withHITACHI LTD28
Top patents by PatentIndex Score
29 records- 0196US4564694AColorless liquid crystalline compoundsHITACHI LTD·Filed 1982·Granted Jan 14, 1986·66 cites·4 claims
- 0288US4634228AFerroelectric liquid crystal cell with rubbed polyimide alignment layerHITACHI LTD·Filed 1984·Granted Jan 6, 1987·42 cites·3 claims
- 0384US5067797ALiquid crystal display cell and process for producing the sameHITACHI LTD·Filed 1989·Granted Nov 26, 1991·45 cites·14 claims
- 0480US5928733AActive-matrix liquid crystal displayHITACHI LTD·Filed 1997·Granted Jul 27, 1999·49 cites·29 claims
- 0578US5220447ALiquid crystal display device and phase plate thereforHITACHI LTD·Filed 1990·Granted Jun 15, 1993·37 cites·28 claims
- 0674US4781439ALiquid crystal polyimide alignment free of scattering domainsHITACHI LTD·Filed 1987·Granted Nov 1, 1988·18 cites·6 claims
- 0773US6756089B2Active-matrix liquid crystal displayHITACHI LTD·Filed 2001·Granted Jun 29, 2004·11 cites·11 claims
- 0873US4381886ALiquid crystal display elementHITACHI LTD·Filed 1981·Granted May 3, 1983·27 cites·21 claims
- 0971US7790248B2Active matrix type liquid crystal display apparatusHITACHI LTD·Filed 2007·Granted Sep 7, 2010·2 cites·11 claims
- 1071US6047098APlastic optical waveguide and optical switch using sameHITACHI LTD·Filed 1998·Granted Apr 4, 2000·22 cites·10 claims
- 1168US4278326ALiquid crystal display elementHITACHI LTD·Filed 1978·Granted Jul 14, 1981·20 cites·8 claims
- 1264US4759614AFerroelectric liquid crystal element with particular alignment film and a method for manufacturing the sameHITACHI LTD·Filed 1986·Granted Jul 26, 1988·23 cites·26 claims
- 1363US6222602B1Liquid crystal display apparatus and a method for manufacturing the sameHITACHI LTD·Filed 1996·Granted Apr 24, 2001·26 cites·18 claims
- 1462US7615260B2Active-matrix liquid crystal displayHITACHI LTD·Filed 2004·Granted Nov 10, 2009·6 cites·5 claims
- 1559US6242060B1Active-matrix liquid crystal displayHITACHI LTD·Filed 1999·Granted Jun 5, 2001·20 cites·8 claims
- 1651US6682783B1Active matrix type liquid crystal display apparatusHITACHI LTD·Filed 1998·Granted Jan 27, 2004·14 cites·11 claims
- 1751US4584120ALiquid crystal compound and liquid crystal compositionHITACHI LTD·Filed 1984·Granted Apr 22, 1986·11 cites·13 claims
- 1850US6310676B1Liquid crystal display apparatusFiled 2000·Granted Oct 30, 2001·2 cites·2 claims
- 1947US4653866ALiquid crystal compound and liquid crystal composition including the sameHITACHI LTD·Filed 1985·Granted Mar 31, 1987·9 cites·18 claims
- 2046US7189439B2Active matrix type liquid crystal display apparatusHITACHI LTD·Filed 2003·Granted Mar 13, 2007·1 cites·33 claims
- 2145US6130737ALateral electric field switching mode liquid crystal display apparatus without black stainsHITACHI LTD·Filed 1998·Granted Oct 10, 2000·9 cites·6 claims
- 2243US6236441B1Liquid crystal display apparatus and a method for manufacturing the sameHITACHI LTD·Filed 1999·Granted May 22, 2001·9 cites·8 claims
- 2343US4694098AColorless liquid crystalline compoundsHITACHI LTD·Filed 1985·Granted Sep 15, 1987·6 cites·5 claims
- 2441US6833898B2Liquid crystal display apparatusHITACHI LTD·Filed 2002·Granted Dec 21, 2004·0 cites·3 claims
- 2540US6483564B2Liquid crystal display apparatusHITACHI LTD·Filed 2001·Granted Nov 19, 2002·0 cites·6 claims
- 2639US5020883AFerroelectric liquid crystal deviceHITACHI LTD·Filed 1988·Granted Jun 4, 1991·5 cites·4 claims
- 2739US4645305ALiquid-crystal compound, liquid crystal composition and liquid crystal display deviceHITACHI LTD·Filed 1984·Granted Feb 24, 1987·6 cites·9 claims
- 2832USRE34885ELiquid crystal polyimide alignment free of scattering domainsHITACHI LTD·Filed 1992·Granted Mar 28, 1995·3 cites·7 claims
- 2932US4076646ALiquid crystal composition for field effect display devicesHITACHI LTD·Filed 1976·Granted Feb 28, 1978·2 cites·7 claims
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