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Inventor

Koji Seki

Inventor
Tokyo, JP

Overview

17→
Patents
1988–2013
Patent span
Chemistry
Primary field (CPC C)

Patents· 17 as inventor

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

C09Dprimary
C09DCoating compositions, e.g. paints, varnishes or lacquers17%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general10%
C08LCompositions of macromolecular compounds7%
Y10TTechnical subjects covered by former us classification7%
A01CPlanting3%
A01GHorticulture3%
A63HToys, e.g. tops, dolls, hoops or building blocks3%
B26FPerforating3%
B29CShaping or joining of plastics3%
B43KImplements for writing or drawing3%
PatentTitleYear
8,606,985'Controlled device to control switching between transmission paths for transmitting data at different rate'20138,363,655'Router device and scalability improvement method for use therein'20137,547,355'Solid drawing material'20097,394,396'Electrical apparatus, image forming apparatus and operation program product'20086,981,410'Flow sensor and method of manufacturing the same'20066,689,303'Injection molding method using a stacked mold'20046,673,138'Multi-color crayon or oil pastel and method of producing the same'20046,602,332'Solid glitter marker'20036,042,940'Solid adhesive'20005,861,943'Photographic processor'19995,744,762'Muffler controller for use in controllable exhaust system of internal combustion engine'19985,725,642'Solid painting material'19985,723,829'Muffler assembly of internal combustion engine'19985,692,374'Exhaust system of internal combustion engine'19974,918,130'Eraser'19904,871,695'Process for the production of glass'19894,768,987'Toy automobile having a body formed by a composition for writing'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2009Patents assigned to BUNCHO CORP (7)· patent assignee history
1988–2004Based in Saitama, JP· patent location history
1989–2013Based in Tokyo, JP· patent location history
1997–1998Patents assigned to CALSONIC CORP (3)· patent assignee history
1998–2000Patents assigned to KOTOBUKI & CO LTD (2)· patent assignee history
1998–2009Based in Kuki, JP· patent location history
1998Based in Yokohama, JP· patent location history
2008–2013Patents assigned to SEKI KOJI (3)· patent assignee history
2008Based in Tamatsukuri, Chuo-ku, Osaka, JP· patent location history
2013Patents assigned to NEC CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BUNCHO CORP71988–2009
CALSONIC CORP31997–1998
SEKI KOJIself32008–2013
KOTOBUKI & CO LTD21998–2000
NEC CORP22013
Locations
LocationPatentsSpan
Tokyo, JP61989–2013
Saitama, JP41988–2004
Kuki, JP31998–2009
Yokohama, JP21998
Tamatsukuri, Chuo-ku, Osaka, JP12008