Inventor

Wataru Nakayama

Inventor

Kashiwa, JP

Overview

39→

Patents

1977–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 39 as inventor

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

F28Fprimary

F28FDetails of heat-exchange and heat-transfer apparatus, of general application18%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h107%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

G01RMeasuring electric variables6%

Y10TTechnical subjects covered by former us classification6%

B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling5%

H01FMagnets5%

H02KDynamo-electric machines5%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems4%

B01DSeparation3%

PatentTitleYear

10,833,623Electric power control unit2020 10,809,137Method of estimating temperature of reactor2020 10,393,774Bus bar module2019 10,295,571Bus bar module2019 10,184,960Current sensor2019 10,153,720Power supply system for electric vehicle2018 7,586,219'Drive guide apparatus'2009 7,556,086'Orientation-independent thermosyphon heat spreader'2009 7,368,837'Drive guide device'2008 5,930,464'Apparatus for controlling a direct memory access operation in an image processing apparatus'1999 RE035721'Cooling device of semiconductor chips'1998 4,949,164'Semiconductor cooling apparatus and cooling method thereof'1990 4,823,863'Thermal conduction device'1989 4,794,775'Method of producing a heat transfer tube for single-phase flow'1989 4,770,242'Cooling device of semiconductor chips'1988 4,715,436'Construction of a heat transfer wall of a heat transfer pipe'1987 4,694,378'Apparatus for cooling integrated circuit chips'1987 4,690,211'Heat transfer tube for single phase flow'1987 4,678,029'Evaporating heat transfer wall'1987 4,653,163'Method for producing a heat transfer wall for vaporizing liquids'1987 4,619,316'Heat transfer apparatus'1986 4,606,405'Heat transfer wall'1986 4,602,681'Heat transfer surface with multiple layers'1986 4,585,055'Liquid film evaporation type heat exchanger'1986 4,561,497'Heat transfer surface and manufacturing method for same'1985 4,520,866'Falling film evaporation type heat exchanger'1985 4,431,980'Electrical apparatus winding'1984 4,363,013'Winding structure for static electrical induction apparatus'1982 4,363,012'Winding structure for static electrical induction apparatus'1982 4,335,324'Rotor for hydrogen-cooled rotary electric machines'1982 4,311,931'Rotor for hydrogen-cooled rotary electric machines'1982 4,246,503'Gas flow cooling system for a rotary electric machine'1981 4,245,206'Winding structure for static electrical induction apparatus'1981 4,207,550'Winding structure of electric devices'1980 4,195,688'Heat-transfer wall for condensation and method of manufacturing the same'1980 4,194,384'Method of manufacturing heat-transfer wall for vapor condensation'1980 4,166,498'Vapor-condensing, heat-transfer wall'1979 4,060,125'Heat transfer wall for boiling liquids'1977 4,044,797'Heat transfer pipe'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1998Patents assigned to HITACHI LTD (27)· patent assignee history

1977–1989Patents assigned to HITACHI CABLE (11)· patent assignee history

1977–1998Based in Kashiwa, JP· patent location history

2008–2009Patents assigned to THK CO LTD (2)· patent assignee history

2008–2009Based in Tokyo, JP· patent location history

2018–2019Patents assigned to TOYOTA MOTOR CO LTD (4)· patent assignee history

2018Based in Miyoshi, JP· patent location history

2019Based in Toyota, JP· patent location history

2020Patents assigned to DENSO CORP (2)· patent assignee history

2020Based in Nisshin, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	27	1977–1998
HITACHI CABLE	11	1977–1989
TOYOTA MOTOR CO LTD	4	2018–2019
DENSO CORP	2	2020
THK CO LTD	2	2008–2009

Locations

Location	Patents	Span
Kashiwa, JP	29	1977–1998
Toyota, JP	3	2019
Nisshin, JP	2	2020
Tokyo, JP	2	2008–2009
Miyoshi, JP	1	2018