LexDanaLexDanabeta
Inventor

Seiji Koyama

Inventor
Kanagawa, JP

Overview

5→
Patents
1997–2009
Patent span
Physics
Primary field (CPC G)

Patents· 5 as inventor

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

G06Fprimary
G06FElectric digital data processing25%
G06GAnalogue computers13%
G11BInformation storage based on relative movement between record carrier and transducer13%
H01QAntennas, i.e. radio aerials13%
H03FAmplifiers13%
H03MCoding13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
7,480,141'Electronic device for cooling interior of housing'20097,301,767'Electronic equipment including an apparatus for cooling interior of housing'20075,748,023'Integrator with output-compensating capability'19985,745,083'Slotted leaky waveguide array antenna and a method of manufacturing the same'19985,703,582'DAC with feedback control for current source bias during non-display period'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2009Patents assigned to IBM (3)· patent assignee history
1997–2007Based in Yamato, JP· patent location history
1998Patents assigned to MIKUNI KOGYO KK (1)· patent assignee history
1998Patents assigned to NIPPON STEEL CORP (1)· patent assignee history
1998–2009Based in Kanagawa, JP· patent location history
1998Based in Odawara, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
IBM31997–2009
MIKUNI KOGYO KK11998
NIPPON STEEL CORP11998
Locations
LocationPatentsSpan
Kanagawa, JP21998–2009
Yamato, JP21997–2007
Odawara, JP11998