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Inventor

Masashi Osawa

Inventor
Saitama, JP

Overview

21→
Patents
1990–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 21 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 elsewhere46%
C07CAcyclic or carbocyclic compounds22%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein15%
C07DHeterocyclic compounds11%
C07BGeneral methods of organic chemistry4%
Y10TTechnical subjects covered by former us classification2%
PatentTitleYear
10,544,365Nematic liquid crystal composition20209,605,208'Nematic liquid crystal composition'20179,587,175'Nematic liquid crystal composition'20179,321,961'Nematic liquid crystal composition'20169,181,484'Compound having 2-fluorophenyloxymethane structure'20159,039,929'Nematic liquid crystal composition'20158,916,718'Compound having 2-fluorophenyloxymethane structure'20147,145,047'Naphthalene derivative and liquid crystal composition comprising the same'20066,693,223'Fluorine-substituted-4-alkenylbenzoic acid and derivatives thereof, and nematic liquid crystal composition containing cyanophenyl benzoate derivatives and liquid crystal display system using the same'20046,607,791'Liquid crystal composition'20036,468,607'Naphthalene derivative and liquid crystal composition comprising the same'20026,287,646'Fluorine-substituted-4-alkenylbenzoic acid and derivatives thereof, and nematic liquid crystal composition containing cyanophenyl benzoate derivatives and liquid crystal display system using the same'20016,010,642'Azine derivative, process for the preparation thereof, nematic liquid crystal composition and liquid crystal display system comprising same'20005,536,443'Cyclic hydrocarbon derivative and liquid crystal composition containing the same'19965,474,707'Cyclic hydrocarbon derivative and liquid crystal composition containing the same'19955,324,451'Lactic acid derivatives and liquid crystal compositions containing the same'19945,128,472'2,5-disubstituted pyrazine derivatives, pyrimidine derivatives, and liquid crystal containing the same'19925,061,398'Optically active lactone derivative, intermediate therefor, process for producing the intermediate, liquid-crystal composition, and liquid-crystal display device'19914,997,942'2,4-disubstituted pyrazine derivatives, pyrimidine derivatives, and liquid crystal containing the same'19914,914,224'Optically active carboxylic acid derivatives and liquid crystalline compositions comprising them'19904,911,862'Optically active carboxylic acid derivatives and liquid crystalline compositions comprising them'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2020Patents assigned to DAINIPPON INK & CHEMICALS (21)· patent assignee history
1990–1994Patents assigned to KAWAMURA INST CHEM RES (6)· patent assignee history
1990Based in Sakura, JP· patent location history
1991–1994Based in Chiba, JP· patent location history
1995–2006Based in Saitama, JP· patent location history
2014–2015Patents assigned to KANEOYA MASAKAZU (2)· patent assignee history
2014–2015Patents assigned to KUSUMOTO TETSUO (2)· patent assignee history
2014–2015Patents assigned to OSAWA MASASHI (2)· patent assignee history
2014–2020Based in Kita-adachi-gun, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DAINIPPON INK & CHEMICALS211990–2020
KAWAMURA INST CHEM RES61990–1994
KANEOYA MASAKAZU22014–2015
KUSUMOTO TETSUO22014–2015
OSAWA MASASHIself22014–2015
Locations
LocationPatentsSpan
Saitama, JP81995–2006
Kita-adachi-gun, JP72014–2020
Chiba, JP41991–1994
Sakura, JP21990