Inventor
Gerhard Illian
Inventor
Frankfurt am Main, DE
Overview
Patents· 25 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere43%
C07DHeterocyclic compounds24%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein20%
C07CAcyclic or carbocyclic compounds6%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium6%
G09GArrangements or circuits for control of indicating devices using static means to present variable information2%
PatentTitleYear
5,876,628'Compounds for use in liquid-crystal composition'19995,859,680'Electrical addressing of ferroelectric liquid-crystal displays'19995,779,935'Ferroelectric liquid crystal mixture'19985,702,639'Use of complex ligands for ions in ferroelectric liquid-crystal mixtures'19975,695,683'Ferroelectric liquid crystal mixture'19975,679,792'Derivatives of 3-cyclohexylpropionic acid, and the use thereof in ferroelectric liquid-crystal mixtures'19975,594,575'Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase'19975,443,754'Pyridylpyrimidines, a process for their preparation and their use in liquid-crystalline mixtures'19955,430,564'Process for producing ferroelectric liquid-crystal cells with oleophilic additive employing heat and low pressure overlapped a short time'19955,407,599'Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixtures'19955,384,070'Use of optically active tetrahydrofuran-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active tetrahydrofuran-2-carboxylic acid esters'19955,378,394'Ferroelectric liquid-crystalline mixtures'19955,370,823'Pyrimidinecyclohexane derivatives, process for their preparation, and their use in liquid-crystalline mixtures'19945,366,657'Geminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixtures'19945,361,152'Process for producing ferroelectric liquid-crystal cells'19945,354,500'Optically active carboxylic esters of oxygen-containing heterocycles as doping substances in liquid crystal mixtures and liquid crystal mixtures containing them'19945,353,136'Ferroelectric liquid crystal with positive dielectric anisotropy, chevron structure and grey scale'19945,348,684'Organosilylalkyl or organosilylalkenyl compounds, process for preparing them and their use in liquid-crystalline mixtures'19945,344,585'Use of 4-fluoropyrimidine derivatives as component for ferroelectric liquid crystal mixtures'19945,328,638'Optically active esters of 5-ethyl- and 5-vinyl-1,3-dioxolane-4-carboxylic acid, their use as doping substances in liquid crystal mixtures and the liquid crystal mixtures containing the new esters'19945,286,409'Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures'19945,257,122'Ferroelectric liquid crystal display having gray steps or a continuous gray scale'19935,231,528'Ferroelectric liquid crystal components having high spontaneous polarization and low helical pitch'19935,206,751'Process for the production of an impact-resistant liquid crystal switching and display device'19935,118,538'Electrically conductive polymers and their use as orienting layer in liquid-crystal switching and display elements'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–1999Patents assigned to HOECHST AG (25)· patent assignee history
1992–1997Based in Frankfurt am Main, DE· patent location history
1994–1999Based in Tokyo, JP· patent location history
1997–1999Based in Erftstadt, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 25 | 1992–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Frankfurt am Main, DE | 18 | 1992–1997 |
| Tokyo, JP | 4 | 1994–1999 |
| Erftstadt, DE | 3 | 1997–1999 |