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Inventor

Takeshi Ohyama

Inventor
Tokyo, JP

Overview

8→
Patents
1990–2020
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.

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer25%
B01DSeparation8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry8%
G02BOptical elements, systems or apparatus8%
G06FElectric digital data processing8%
G09FDisplaying8%
H01HElectric switches8%
H04BTransmission8%
H04MTelephonic communication8%
H04WWireless communication networks8%
PatentTitleYear
10,849,047Beacon20207,218,953'Infrared communication adapter'20076,876,354'Keyboard type input device and portable information processor'20056,008,965'Disk drive with rectification wall for circulation filter and filter unit therefor'19995,874,901'Electronic equipment'19995,714,665'Method and apparatus for the decomposition and re-use-as-resource treatment of ozone layer-depleting substances by application of UV light'19985,400,195'Magnetic disk apparatus with flexible printed circuit attached to head carriage by double sided pressure sensitive tape'19954,935,830'Electro-magnetic shield structure for shielding a servo magnetic head of a magnetic disk storage device'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1999Patents assigned to FUJITSU LTD (3)· patent assignee history
1990–1999Based in Nagano, JP· patent location history
1995Based in Kawasaki, JP· patent location history
1998Patents assigned to TOKYO ELECTRIC POWER CO (1)· patent assignee history
1998Based in Yokohama, JP· patent location history
1999Patents assigned to OKI ELECTRIC IND CO LTD (1)· patent assignee history
1999–2020Based in Tokyo, JP· patent location history
2005Patents assigned to LINK EVOLUTION CO LTD (1)· patent assignee history
2007Patents assigned to ITX E GLOBALEDGE CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD31990–1999
ITX E GLOBALEDGE CORP12007
LINK EVOLUTION CO LTD12005
OKI ELECTRIC IND CO LTD11999
TOKYO ELECTRIC POWER CO11998
Locations
LocationPatentsSpan
Tokyo, JP41999–2020
Nagano, JP21990–1999
Yokohama, JP11998
Kawasaki, JP11995