Inventor · disambiguated record
Takamasa Harada
Also filed as: HARADA TAKAMASA
42 granted patents·4 pending applications·691 citations·filing 1980–2004
98Inventor score
Files withHOECHST AG23SEIKO INSTR INC6SEIKO INSTR & ELECTRONICS5TOMOEGAWA CO LTD4CLARIANT FINANCE BVI LTD2
Top patents by PatentIndex Score
46 records- 0196US4725688ALiquid crystal compoundSEIKO INSTR INC·Filed 1985·Granted Feb 16, 1988·71 cites·78 claims
- 0288US4715688AFerroelectric liquid crystal display device having an A.C. holding voltageSEIKO INSTR INC·Filed 1984·Granted Dec 29, 1987·81 cites·41 claims
- 0388US4693563AFerro-electric liquid crystal electro-optical deviceSEIKO INSTR & ELECTRONICS·Filed 1985·Granted Sep 15, 1987·76 cites·20 claims
- 0485US7473721B2Nanocomposite material for the production of index of refraction gradient filmsTOMOEGAWA CO LTD·Filed 2003·Granted Jan 6, 2009·27 cites·10 claims
- 0579US5744203AAlignment layer for liquid crystalsHOECHST AG·Filed 1994·Granted Apr 28, 1998·38 cites·12 claims
- 0673US4989955ALiquid crystal electro-optical element and process for preparation thereofTORAY INDUSTRIES·Filed 1988·Granted Feb 5, 1991·28 cites·12 claims
- 0769US5407599ACyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixturesHOECHST AG·Filed 1993·Granted Apr 18, 1995·11 cites·19 claims
- 0868US4662721AFerro-electric liquid crystal electro-optical deviceSEIKO INSTR & ELECTRONICS·Filed 1985·Granted May 5, 1987·27 cites·19 claims
- 0967US5430564AProcess for producing ferroelectric liquid-crystal cells with oleophilic additive employing heat and low pressure overlapped a short timeHOECHST AG·Filed 1993·Granted Jul 4, 1995·22 cites·4 claims
- 1064US7154672B2Optical film having controlled scattering/transmitting characteristicsTOMOEGAWA CO LTD·Filed 2003·Granted Dec 26, 2006·8 cites·17 claims
- 1163US5118538AElectrically conductive polymers and their use as orienting layer in liquid-crystal switching and display elementsHOECHST AG·Filed 1990·Granted Jun 2, 1992·20 cites·7 claims
- 1262US4939003ALiquid crystal elementTORAY INDUSTRIES·Filed 1988·Granted Jul 3, 1990·22 cites·15 claims
- 1361US4980082AFerroelectric SmC liquid crystal composition which comprises pyrimidinylphenyl ester compoundsSEIKO INSTR INC·Filed 1987·Granted Dec 25, 1990·6 cites·27 claims
- 1456US7473521B2Composite mask for producing a diffuserTOMOEGAWA CO LTD·Filed 2002·Granted Jan 6, 2009·5 cites·19 claims
- 1556US5231528AFerroelectric liquid crystal components having high spontaneous polarization and low helical pitchHOECHST AG·Filed 1992·Granted Jul 27, 1993·12 cites·12 claims
- 1656US4408201AElectro-optic display device using phase transition mode liquid crystalSEIKO INSTR & ELECTRONICS·Filed 1980·Granted Oct 4, 1983·14 cites·5 claims
- 1754US5795629ALiquid crystal alignment layer and liquid crystal display deviceHOECHST AG·Filed 1996·Granted Aug 18, 1998·21 cites·20 claims
- 1852US5656340ALiquid crystal display deviceHOECHST AG·Filed 1995·Granted Aug 12, 1997·20 cites·19 claims
- 1952US5361152AProcess for producing ferroelectric liquid-crystal cellsHOECHST AG·Filed 1991·Granted Nov 1, 1994·18 cites·2 claims
- 2051US5384168AFerroelectric liquid-crystal display of high contrast and brightnessHOECHST AG·Filed 1991·Granted Jan 24, 1995·17 cites·10 claims
- 2150US6372403B1Photosensitive resin compositionCLARIANT FINANCE BVI LTD·Filed 1999·Granted Apr 16, 2002·13 cites·9 claims
- 2250US5206751AProcess for the production of an impact-resistant liquid crystal switching and display deviceHOECHST AG·Filed 1991·Granted Apr 27, 1993·10 cites·9 claims
- 2349US5408347APolyester based liquid-crystal display deviceHOECHST AG·Filed 1991·Granted Apr 18, 1995·7 cites·7 claims
- 2449US5353136AFerroelectric liquid crystal with positive dielectric anisotropy, chevron structure and grey scaleHOECHST AG·Filed 1990·Granted Oct 4, 1994·9 cites·4 claims
- 2547US5702639AUse of complex ligands for ions in ferroelectric liquid-crystal mixturesHOECHST AG·Filed 1995·Granted Dec 30, 1997·9 cites·20 claims
- 2647US5333075AFerroelectric liquid crystal mixtures containing lipohilizing, lipophilic or amphiphilic compounds for eliminating ionic impuritiesHOECHST AG·Filed 1993·Granted Jul 26, 1994·8 cites·6 claims
- 2746US4792211AFerroelectric liquid crystal electro-optical device having high water repellent alignment layerSEIKO INSTR & ELECTRONICS·Filed 1986·Granted Dec 20, 1988·13 cites·15 claims
- 2845US5178792AMacrocyclic compounds as component for ferroelectric liquid crystal mixturesHOECHST AG·Filed 1991·Granted Jan 12, 1993·8 cites·6 claims
- 2944US8034435B2Plastic film with a multilayered interference coatingTOMOEGAWA CO LTD·Filed 2003·Granted Oct 11, 2011·0 cites·15 claims
- 3044USRE37333EFerroelectric liquid crystal display device having an A.C. holding voltageSEIKO INSTR INC·Filed 1992·Granted Aug 21, 2001·10 cites·116 claims
- 3144US5366657AGeminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixturesHOECHST AG·Filed 1991·Granted Nov 22, 1994·7 cites·11 claims
- 3243US5670084AAlignment layer material for liquid crystal display devicesHOECHST AG·Filed 1995·Granted Sep 23, 1997·13 cites·19 claims
- 3341US5373380AFerroelectric liquid crystal display with liquid crystal mixtures having high spontaneous polarization and short helical pitch and alignment layers containing lipophilic or amphiphilic compoundsHOECHST AG·Filed 1993·Granted Dec 13, 1994·10 cites·6 claims
- 3441US4633012ALiquid crystal compoundSEIKO INSTR & ELECTRONICS·Filed 1985·Granted Dec 30, 1986·6 cites·2 claims
- 3540US6602604B2Coating compositionCLARIANT FINANCE BVI LTD·Filed 2000·Granted Aug 5, 2003·1 cites·8 claims
- 3640US2006268571A1Surface light source deviceHARADA TAKAMASA·Filed 2004·Application pending·0 cites
- 3740US2007025121A1Surface light sourceHARADA TAKAMASA·Filed 2004·Application pending·0 cites
- 3840US2005018303A1Optical film having controlled scattering/ transmitting characteristics and liquid crystal display using itFiled 2002·Application pending·0 cites
- 3939US4793693AFerro-electric liquid crystal electro-optical device having a drive voltage with DC and chopping componentsSEIKO INSTR INC·Filed 1987·Granted Dec 27, 1988·6 cites·16 claims
- 4037US5360576AChiral alkenylaryl 2,3-epoxyalkyl ethers, and the use thereof in liquid-crystalline mixturesHOECHST AG·Filed 1991·Granted Nov 1, 1994·1 cites·6 claims
- 4136US5167856AIonophore-containing ferroelectric liquid crystal mixturesHOECHST AG·Filed 1991·Granted Dec 1, 1992·4 cites·10 claims
- 4236US4762400AFerroelectric liquid crystal electro-optical device having half-select voltage to maximize contrastSEIKO INSTR INC·Filed 1987·Granted Aug 9, 1988·5 cites·12 claims
- 4336US2004106742A1Coating compositionFiled 2003·Application pending·0 cites
- 4435US5286409ALiquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixturesHOECHST AG·Filed 1990·Granted Feb 15, 1994·3 cites·15 claims
- 4534US5378394AFerroelectric liquid-crystalline mixturesHOECHST AG·Filed 1990·Granted Jan 3, 1995·3 cites·9 claims
- 4631US5594575AFerroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phaseHOECHST AG·Filed 1995·Granted Jan 14, 1997·1 cites·9 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →