Inventor

Tomoyuki Yui

Inventor

Tsukuba, JP

Overview

1977–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 48 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%

C07CAcyclic or carbocyclic compounds34%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein9%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry4%

C01BNon-metallic elements4%

C07DHeterocyclic compounds3%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture2%

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

B29CShaping or joining of plastics1%

C07BGeneral methods of organic chemistry1%

PatentTitleYear

6,372,308'Liquid crystal composition'2002 6,258,296'Fluorine-substituted compounds and ferrielectric liquid-crystal composition containing the same'2001 6,239,316'Optically active secondary alcohol and process for the production thereof'2001 6,217,954'Phenyl triester compound and anti-ferroelectric liquid crystal composition containing the same'2001 6,197,216'Ferrielectric liquid crystal compound'2001 6,197,389'Ferrielectric liquid crystal compound'2001 6,151,095'Anti-ferroelectric liquid crystal cell'2000 6,133,469'Anti-ferroelectric liquid crystal compound'2000 6,134,708'Program compilation execution system'2000 6,128,065'Ferrielectric liquid crystal compound'2000 6,103,517'Process for the production of an optically active alcohol and a novel optically active alcohol'2000 6,056,892'Method for purifying liquid crystal'2000 6,018,070'Two-rings-containing phenyl ester compound and anti-perroelectric liquid crystal composition containing the same'2000 6,001,278'Anti-ferroelectric liquid crystal composition'1999 6,002,042'Liquid crystal compound'1999 5,985,172'Racemic compound and anti-ferroelectric liquid crystal composition containing the compound'1999 5,980,780'Racemic compound and anti-ferroelectric liquid crystal composition containing the compound'1999 5,976,409'Swallow-tail-shaped liquid crystal compound'1999 5,972,243'Ferrielectric liquid crystal compound'1999 5,968,413'Anti-ferroelectric liquid crystal compounds'1999 5,951,914'Racemic compound and anti-ferroelectric liquid crystal composition'1999 5,942,646'Optically active alcohol and process for the production thereof'1999 5,938,973'Swallow-tailed compound and ferrielectric liquid crystal composition containing the same'1999 5,939,586'Process for the production of intermediate for liquid crystal compound'1999 5,840,209'Optically active compound, liquid crystal compositions containing the optically active compound, and liquid crystal display device'1998 5,756,816'Process for the production of phenol derivatives'1998 5,728,864'Liquid crystal compound having ferrielectric phase and liquid crystal composition'1998 5,723,069'Anti-ferroelectric liquid crystal compound and anti-ferroelectric liquid crystal composition'1998 5,716,544'Phenyl ester compound and liquid crystal composition containing the same'1998 5,660,762'Two-rings-containing phenyl ester compound and anti-ferroelectric liquid crystal composition containing the same'1997 5,587,106'Liquid crystal display devices and liquid crystal substances therefor'1996 5,534,190'Anti-ferroelectric liquid crystal composition and liquid crystal display'1996 5,482,651'Dioxane type liquid crystal substance'1996 5,378,396'Liquid crystal compound and liquid crystal display device'1995 5,374,375'Liquid crystal compound and liquid crystal display device'1994 5,367,391'Method for driving an antiferroelectric liquid crystal cell'1994 5,364,560'Liquid crystal compound and liquid crystal display device'1994 5,352,382'Liquid crystal composition'1994 5,340,498'Anti-ferroelectric liquid crystal and liquid crystal display device'1994 5,275,757'Liquid crystal compounds and liquid crystal display devices'1994 5,264,150'Optically active alcohol, process for producing same and liquid crystal compound using same'1993 5,078,477'Ferroelectric liquid crystal cell'1992 4,828,762'Process for the production of 2,3,5-trimethylbenzoquinone'1989 4,769,500'Process for preparation of 2,3,5-trimethylhydroquinone'1988 4,416,606'Apparatus for granulating sodium percarbonate'1983 4,409,197'Process for producing sodium percarbonate'1983 4,388,287'Process for producing sodium percarbonate'1983 4,024,195'Process for alkylating the ortho-position of phenol compounds'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2002Patents assigned to MITSUBISHI GAS CHEMICAL CO (46)· patent assignee history

1983Based in Yokkaichi, JP· patent location history

1988–2000Based in Nagareyama, JP· patent location history

1998–2001Based in Tsukuba, JP· patent location history

2000Patents assigned to CITIZEN WATCH CO LTD (1)· patent assignee history

2000Patents assigned to MITSUBISHI GAS CHEMICALS COMPA (1)· patent assignee history

2000Patents assigned to NEC CORP (1)· patent assignee history

2000–2001Based in Tokyo, JP· patent location history

2001–2002Based in Katsushika-ku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI GAS CHEMICAL CO	46	1977–2002
CITIZEN WATCH CO LTD	1	2000
MITSUBISHI GAS CHEMICALS COMPA	1	2000
NEC CORP	1	2000

Locations

Location	Patents	Span
Tsukuba, JP	22	1998–2001
Nagareyama, JP	15	1988–2000
Katsushika-ku, JP	3	2001–2002
Yokkaichi, JP	3	1983
Tokyo, JP	2	2000–2001