Inventor
HARADA TAKAMASA
JP42 patents
⚠️ This page may combine multiple inventors who share the name “HARADA TAKAMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
23 patentsUS5430564AJul 4, 1995
Process for producing ferroelectric liquid-crystal cells with oleophilic additive employing heat and low pressure overlapped a short time
HOECHST AG22 citations92
US5795629AAug 18, 1998
Liquid crystal alignment layer and liquid crystal display device
HOECHST AG21 citations91
US5744203AApr 28, 1998
Alignment layer for liquid crystals
HOECHST AG38 citations91
US5656340AAug 12, 1997
Liquid crystal display device
HOECHST AG20 citations91
US5118538AJun 2, 1992
Electrically conductive polymers and their use as orienting layer in liquid-crystal switching and display elements
HOECHST AG20 citations80
US5702639ADec 30, 1997
Use of complex ligands for ions in ferroelectric liquid-crystal mixtures
HOECHST AG9 citations74
US5408347AApr 18, 1995
Polyester based liquid-crystal display device
HOECHST AG7 citations73
US5407599AApr 18, 1995
Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixtures
HOECHST AG11 citations73
US5373380ADec 13, 1994
Ferroelectric liquid crystal display with liquid crystal mixtures having high spontaneous polarization and short helical pitch and alignment layers containing lipophilic or amphiphilic compounds
HOECHST AG10 citations73
US5366657ANov 22, 1994
Geminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixtures
HOECHST AG7 citations73
US5361152ANov 1, 1994
Process for producing ferroelectric liquid-crystal cells
HOECHST AG18 citations73
US5353136AOct 4, 1994
Ferroelectric liquid crystal with positive dielectric anisotropy, chevron structure and grey scale
HOECHST AG9 citations73
US5333075AJul 26, 1994
Ferroelectric liquid crystal mixtures containing lipohilizing, lipophilic or amphiphilic compounds for eliminating ionic impurities
HOECHST AG8 citations73
US5231528AJul 27, 1993
Ferroelectric liquid crystal components having high spontaneous polarization and low helical pitch
HOECHST AG12 citations73
US5206751AApr 27, 1993
Process for the production of an impact-resistant liquid crystal switching and display device
HOECHST AG10 citations73
US5178792AJan 12, 1993
Macrocyclic compounds as component for ferroelectric liquid crystal mixtures
HOECHST AG8 citations73
US5670084ASep 23, 1997
Alignment layer material for liquid crystal display devices
HOECHST AG13 citations72
US5384168AJan 24, 1995
Ferroelectric liquid-crystal display of high contrast and brightness
HOECHST AG17 citations72
US5167856ADec 1, 1992
Ionophore-containing ferroelectric liquid crystal mixtures
HOECHST AG4 citations63
US5378394AJan 3, 1995
Ferroelectric liquid-crystalline mixtures
HOECHST AG3 citations62
US5286409AFeb 15, 1994
Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures
HOECHST AG3 citations62
US5594575AJan 14, 1997
Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase
HOECHST AG1 citations52
US5360576ANov 1, 1994
Chiral alkenylaryl 2,3-epoxyalkyl ethers, and the use thereof in liquid-crystalline mixtures
HOECHST AG1 citations50
SEIKO INSTR INC
6 patentsUS4725688AFeb 16, 1988
Liquid crystal compound
SEIKO INSTR INC71 citations95
US4715688ADec 29, 1987
Ferroelectric liquid crystal display device having an A.C. holding voltage
SEIKO INSTR INC81 citations92
USRE37333EAug 21, 2001
Ferroelectric liquid crystal display device having an A.C. holding voltage
SEIKO INSTR INC10 citations74
US4793693ADec 27, 1988
Ferro-electric liquid crystal electro-optical device having a drive voltage with DC and chopping components
SEIKO INSTR INC6 citations62
US4762400AAug 9, 1988
Ferroelectric liquid crystal electro-optical device having half-select voltage to maximize contrast
SEIKO INSTR INC5 citations62
US4980082ADec 25, 1990
Ferroelectric SmC liquid crystal composition which comprises pyrimidinylphenyl ester compounds
SEIKO INSTR INC6 citations59
SEIKO INSTR & ELECTRONICS
5 patentsUS4693563ASep 15, 1987
Ferro-electric liquid crystal electro-optical device
SEIKO INSTR & ELECTRONICS76 citations96
US4662721AMay 5, 1987
Ferro-electric liquid crystal electro-optical device
SEIKO INSTR & ELECTRONICS27 citations91
US4408201AOct 4, 1983
Electro-optic display device using phase transition mode liquid crystal
SEIKO INSTR & ELECTRONICS14 citations74
US4633012ADec 30, 1986
Liquid crystal compound
SEIKO INSTR & ELECTRONICS6 citations73
US4792211ADec 20, 1988
Ferroelectric liquid crystal electro-optical device having high water repellent alignment layer
SEIKO INSTR & ELECTRONICS13 citations70
TOMOEGAWA CO LTD
4 patentsUS7473721B2Jan 6, 2009
Nanocomposite material for the production of index of refraction gradient films
TOMOEGAWA CO LTD27 citations91
US7154672B2Dec 26, 2006
Optical film having controlled scattering/transmitting characteristics
TOMOEGAWA CO LTD8 citations74
US7473521B2Jan 6, 2009
Composite mask for producing a diffuser
TOMOEGAWA CO LTD5 citations61
US8034435B2Oct 11, 2011
Plastic film with a multilayered interference coating
TOMOEGAWA CO LTD0 citations51