Inventor

Ayako Takeichi

Inventor

Tokorozawa, JP

Overview

8→

Patents

1997–2003

Patent span

Chemistry

Primary field (CPC C)

Patents· 8 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 elsewhere41%

C07DHeterocyclic compounds29%

C07CAcyclic or carbocyclic compounds12%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein12%

G09GArrangements or circuits for control of indicating devices using static means to present variable information6%

PatentTitleYear

6,549,188'Ferroelectric liquid-crystal display with wide range of working temperatures'2003 6,171,519'Ferroelectric liquid crystal mixture'2001 6,022,492'Difluorophenyl pyrimidyl pyridine derivatives and the use thereof in liquid crystal mixtures'2000 5,880,804'Process for producing ferroelectric liquid crystal device'1999 5,876,628'Compounds for use in liquid-crystal composition'1999 5,844,653'Liquid crystal mixture'1998 5,779,935'Ferroelectric liquid crystal mixture'1998 5,695,683'Ferroelectric liquid crystal mixture'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–1999Patents assigned to HOECHST AG (5)· patent assignee history

1997–2003Based in Tokorozawa, JP· patent location history

1999Based in Tokorazawa, JP· patent location history

2000Patents assigned to HOESCHT RESEARCH & TECHNOLOGY (1)· patent assignee history

2000Based in Iokorozawa, JP· patent location history

2001Patents assigned to HOECHST RES & TECH GMBH & CO (1)· patent assignee history

2003Patents assigned to AVENTIS RES & TECHNOLOGY DEUTS (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HOECHST AG	5	1997–1999
AVENTIS RES & TECHNOLOGY DEUTS	1	2003
HOECHST RES & TECH GMBH & CO	1	2001
HOESCHT RESEARCH & TECHNOLOGY	1	2000

Locations

Location	Patents	Span
Tokorozawa, JP	6	1997–2003
Iokorozawa, JP	1	2000
Tokorazawa, JP	1	1999