Inventor

Toshihiko Koseki

Inventor

Yokohama, JP

Overview

8→

Patents

1978–2012

Patent span

Physics

Primary field (CPC G)

Patents· 8 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein28%

B23KSoldering or unsoldering11%

C09KMaterials for miscellaneous applications, not provided for elsewhere11%

B21BRolling of metal6%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form6%

C21DModifying the physical structure of ferrous metals6%

C22CAlloys6%

F03BMachines or engines for liquids6%

F04DNon-positive-displacement pumps6%

G02BOptical elements, systems or apparatus6%

PatentTitleYear

8,137,819'Multilayer steel and method for producing multilayer steel'2012 6,734,944'Liquid crystal display'2004 6,159,310'Wire for welding high-chromium steel'2000 5,374,493'Color filter and method of fabricating a color filter'1994 5,345,324'Active matrix liquid crystal display device having two light shielding layers'1994 5,229,039'Color liquid crystal display and method of manufacture'1993 5,121,237'Liquid crystal display device and method of manufacture'1992 4,073,594'Pump starting method for hydraulic machinery'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to HITACHI LTD (1)· patent assignee history

1978Based in Hitachi, JP· patent location history

1992–2004Patents assigned to IBM (5)· patent assignee history

1992–1994Based in Yokohama, JP· patent location history

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

2000Based in Oita, JP· patent location history

2004Based in Himeji, JP· patent location history

2012Patents assigned to INOUE JUNYA (1)· patent assignee history

2012Patents assigned to KOSEKI TOSHIHIKO (1)· patent assignee history

2012Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
IBM	5	1992–2004
HITACHI LTD	1	1978
INOUE JUNYA	1	2012
KOSEKI TOSHIHIKOself	1	2012
NIPPON STEEL CORP	1	2000

Locations

Location	Patents	Span
Yokohama, JP	4	1992–1994
Tokyo, JP	1	2012
Himeji, JP	1	2004
Oita, JP	1	2000
Hitachi, JP	1	1978