Inventor

Tsuneo Nakahara

Inventor

Osaka, JP

Overview

7→

Patents

1976–2008

Patent span

Physics

Primary field (CPC G)

Patents· 7 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus18%

B29CShaping or joining of plastics12%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts12%

C03BManufacture, shaping, or supplementary processes12%

G01SRadio direction-finding6%

G06KGraphical data reading6%

G06VImage or video recognition or understanding6%

G08GTraffic control systems6%

H01JElectric discharge tubes or discharge lamps6%

H03KPulse technique6%

PatentTitleYear

7,432,521'Logical operation element field emission emitter and logical operation circuit'2008 7,039,284'Optical waveguide incorporating submedia'2006 6,459,403'Traffic control system'2002 4,315,245'Optical information reading device'1982 4,123,483'Manufacturing method of an optical waveguide'1978 4,088,388'O-Type optical waveguide'1978 RE028867'Moving object communication control system'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2008Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (6)· patent assignee history

1978Based in Yokohama-shi, JP· patent location history

1978Based in Yokohama, JP· patent location history

1982–2002Based in Osaka, JP· patent location history

2006Based in Tokyo, JP· patent location history

2008Based in Itami, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SUMITOMO ELECTRIC INDUSTRIES	6	1978–2008

Locations

Location	Patents	Span
Osaka, JP	2	1982–2002
Itami, JP	1	2008
Tokyo, JP	1	2006
Yokohama-shi, JP	1	1978
Yokohama, JP	1	1978