Inventor

Fumio Takeda

Inventor

Ushiku, JP

Overview

30→

Patents

1977–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 30 as inventor

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

E04Fprimary

E04FFinishing work on buildings, e.g. stairs, floors15%

H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines13%

H01PWaveguides10%

B41JTypewriters6%

H01QAntennas, i.e. radio aerials6%

B65HHandling thin or filamentary material, e.g. sheets, webs, cables4%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids4%

G11BInformation storage based on relative movement between record carrier and transducer4%

H03FAmplifiers4%

B62KCycles2%

PatentTitleYear

9,732,751'Water lubricated screw compressor'2017 9,348,378'Computer provided with cooling system'2016 8,459,957'Water-injected compressor'2013 8,215,439'Dry clutch, and motorcycle equipped with the same'2012 7,081,311'Fuel cell system'2006 5,739,976'Magnetic recording and reproducing apparatus'1998 5,570,831'Pneumatic static guide for a tape'1996 5,495,371'Magnetic tape library device and method for maintaining magnetic recording and reproducing device and magnetic head'1996 5,386,670'Method for manufacturing system floor and floor base for system floor'1995 5,245,805'Interior panel unit for permitting arrangement of cables and devices on room floor'1993 5,197,244'Interior panel unit for permitting arrangement of cables and devices on room floor'1993 5,187,907'Interior panel unit for permitting arrangement of cables and devices on room floor'1993 5,184,438'Interior panel unit for permitting arrangement of cables and devices on room floor'1993 5,090,169'Interior panel unit for permitting arrangement of cables and devices on room floor'1992 5,062,723'Printing apparatus'1991 5,061,092'Multicolor thermal printer recording medium transmission mechanism'1991 5,001,498'Thermal transfer printer'1991 4,853,649'Distributed fet amplifier and bias voltage supply circuit therefor'1989 4,827,266'Antenna with lumped reactive matching elements between radiator and groundplate'1989 4,803,443'Microwave power combining FET amplifier'1989 4,789,846'Microwave semiconductor switch'1988 4,653,742'Sheets separating and feeding apparatus'1987 4,639,694'Power distribution circuit having center portions of isolation resistors connected together'1987 4,607,240'Directional coupler'1986 4,593,499'Interior panel'1986 4,571,519'Sezawa surface acoustic wave device using a piezoelectric layer over a nitride layer on a substrate'1986 4,490,696'Crossed waveguide type polarization separator'1984 4,358,770'Multiple frequency antenna feed system'1982 4,345,255'Antenna feed system'1982 4,052,724'Branching filter'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1989Patents assigned to MITSUBISHI ELECTRIC CORP (9)· patent assignee history

1977–1989Based in Kamakura, JP· patent location history

1986–1995Patents assigned to TOSHIBA KK (7)· patent assignee history

1986–1989Based in Kanagawa, JP· patent location history

1987–2016Patents assigned to HITACHI LTD (9)· patent assignee history

1991Patents assigned to HITACHI KOKI KK (2)· patent assignee history

1991–2013Based in Ushiku, JP· patent location history

1992–1993Based in Hachiooji, JP· patent location history

1993–2017Based in Tokyo, JP· patent location history

2012–2016Patents assigned to TAKEDA FUMIO (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	9	1987–2016
MITSUBISHI ELECTRIC CORP	9	1977–1989
TOSHIBA KK	7	1986–1995
TAKEDA FUMIOself	3	2012–2016
HITACHI KOKI KK	2	1991

Locations

Location	Patents	Span
Ushiku, JP	8	1991–2013
Kamakura, JP	7	1977–1989
Tokyo, JP	4	1993–2017
Hachiooji, JP	4	1992–1993
Kanagawa, JP	3	1986–1989