Inventor · disambiguated record
Yasuyuki Koizumi
Also filed as: KOIZUMI YASUYUKI
18 granted patents·207 citations·filing 1992–2002
94Inventor score
Files withCHISSO CORP18
Top patents by PatentIndex Score
18 records- 0191US6319570B1Liquid crystalline compound, liquid crystal composition comprising the liquid crystal-line compound, and liquid crystal display device using the liquid crystal compositionCHISSO CORP·Filed 2000·Granted Nov 20, 2001·24 cites·17 claims
- 0280US5733477ALiquid crystal composition and liquid crystal display elementCHISSO CORP·Filed 1996·Granted Mar 31, 1998·17 cites·18 claims
- 0377US6703083B2Silicon compound, liquid crystal composition and liquid crystal displayCHISSO CORP·Filed 2002·Granted Mar 9, 2004·18 cites·24 claims
- 0476US6190576B1Liquid crystal compounds, liquid crystal compostions containing the compounds, and liquid crystal display devices made by using the compositionsCHISSO CORP·Filed 1997·Granted Feb 20, 2001·35 cites·21 claims
- 0575US6051288AFluorine-substituted liquid-crystal compound, liquid-crystal composition and liquid-crystal display deviceCHISSO CORP·Filed 1996·Granted Apr 18, 2000·16 cites·21 claims
- 0673US5604120AMethod for producing optically active endo-2-norborneolsCHISSO CORP·Filed 1995·Granted Feb 18, 1997·16 cites·12 claims
- 0770US6174457B1Compound having alkadienyl group as side chain, and liquid crystal composition using sameCHISSO CORP·Filed 1997·Granted Jan 16, 2001·28 cites·20 claims
- 0863US5518903AProcess for producing optically active 3-aminobutanoic acid and the ester intermediatesCHISSO CORP·Filed 1994·Granted May 21, 1996·8 cites·6 claims
- 0957US5449793AProcess for producing an optically active 1,5-disubstituted-2,4-O-isopropylidene-2,4-dihydroxypentaneCHISSO CORP·Filed 1994·Granted Sep 12, 1995·6 cites·23 claims
- 1055US5776367AAlkenylcyclohexane derivatives, liquid crystal composition and liquid crystal display elementCHISSO CORP·Filed 1996·Granted Jul 7, 1998·14 cites·18 claims
- 1152US5395766AOptically active trans-2-aryl-1-cyclohexanol derivatives and a process for producing the compoundsCHISSO CORP·Filed 1992·Granted Mar 7, 1995·4 cites·2 claims
- 1247US5395983AProcess for producing 1-phenyl-1,3-propanediols having high optical purtiyCHISSO CORP·Filed 1994·Granted Mar 7, 1995·6 cites·7 claims
- 1346US5755994AEster derivative, liquid crystal composition and liquid crystal display elementCHISSO CORP·Filed 1996·Granted May 26, 1998·7 cites·17 claims
- 1443US6001275ALiquid-crystalline compound having dienyl moiety and liquid-crystal compositionCHISSO CORP·Filed 1996·Granted Dec 14, 1999·2 cites·13 claims
- 1538US6086964ALiquid crystalline compound having dienyl moiety and liquid crystal compositionCHISSO CORP·Filed 1999·Granted Jul 11, 2000·1 cites·7 claims
- 1638US5329018AOptically active 1-5-disubstituted-2,4-o-isopropylidene-2,4-dihydroxypentane and a process for producing the sameCHISSO CORP·Filed 1993·Granted Jul 12, 1994·1 cites·6 claims
- 1737US5820784ALiquid crystal compostion and liquid crystal display deviceCHISSO CORP·Filed 1996·Granted Oct 13, 1998·3 cites·18 claims
- 1836US5266728AMethod for producing optically active 3-substituted-2-norbornanones and their intermediatesCHISSO CORP·Filed 1992·Granted Nov 30, 1993·1 cites·3 claims
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