Inventor

Mikio Murakami

Inventor

Kakegawa, JP

Overview

18→

Patents

1992–1999

Patent span

Chemistry

Primary field (CPC C)

Patents· 18 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 elsewhere37%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein29%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds12%

C07DHeterocyclic compounds10%

Y10TTechnical subjects covered by former us classification5%

C07CAcyclic or carbocyclic compounds2%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium2%

G09GArrangements or circuits for control of indicating devices using static means to present variable information2%

PatentTitleYear

5,859,680'Electrical addressing of ferroelectric liquid-crystal displays'1999 5,594,575'Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase'1997 5,437,813'Liquid crystal display device'1995 5,407,599'Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixtures'1995 5,408,347'Polyester based liquid-crystal display device'1995 5,384,070'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'1995 5,378,394'Ferroelectric liquid-crystalline mixtures'1995 5,354,500'Optically active carboxylic esters of oxygen-containing heterocycles as doping substances in liquid crystal mixtures and liquid crystal mixtures containing them'1994 5,353,136'Ferroelectric liquid crystal with positive dielectric anisotropy, chevron structure and grey scale'1994 5,348,684'Organosilylalkyl or organosilylalkenyl compounds, process for preparing them and their use in liquid-crystalline mixtures'1994 5,331,081'Use of fluorinated aromatic polyamides as orientation layer for liquid-crystal switching and display devices'1994 5,328,638'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'1994 5,286,409'Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures'1994 5,257,122'Ferroelectric liquid crystal display having gray steps or a continuous gray scale'1993 5,231,528'Ferroelectric liquid crystal components having high spontaneous polarization and low helical pitch'1993 5,196,501'Substituted aromatic polyamides as orientation layers for liquid crystal display elements and liquid crystal switching elements'1993 5,166,304'Use of polyaryl ether ketones as alignment layers'1992 5,118,538'Electrically conductive polymers and their use as orienting layer in liquid-crystal switching and display elements'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1999Patents assigned to HOECHST AG (18)· patent assignee history

1992–1997Based in Kakegawa, JP· patent location history

1993–1994Based in Konigstein/Taunus, DE· patent location history

1994–1995Based in Konigstein, DE· patent location history

1995Patents assigned to AKASHI MITSURU (1)· patent assignee history

1995Based in Sakai, JP· patent location history

1999Based in Kawagoe, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HOECHST AG	18	1992–1999
AKASHI MITSURU	1	1995

Locations

Location	Patents	Span
Kakegawa, JP	11	1992–1997
Konigstein/Taunus, DE	3	1993–1994
Konigstein, DE	2	1994–1995
Kawagoe, JP	1	1999
Sakai, JP	1	1995