Inventor

Shigeo Tamaki

Inventor

Hitachinaka, JP

Overview

16→

Patents

1982–2009

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 16 as inventor

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

F02Dprimary

F02DControlling combustion engines32%

F16KValves16%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof10%

F05CIndexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines10%

Y10TTechnical subjects covered by former us classification10%

B29CShaping or joining of plastics6%

B29LIndexing scheme associated with subclass b29c, relating to particular articles6%

F01PCooling of machines or engines in general3%

F02BInternal-combustion piston engines3%

Y02TClimate change mitigation technologies related to transportation3%

PatentTitleYear

7,484,527'Switch valve device'2009 7,316,385'Throttle body'2008 6,986,502'Throttle body'2006 6,079,390'Throttle device for internal combustion engine'2000 5,983,858'Throttle device for internal combustion engine'1999 5,749,336'Intake valve control system for internal combustion engine'1998 5,687,695'Air flow rate control device of engine and draining off method thereof'1997 5,509,396'Throttle valve actuating apparatus for use in internal combustion engine'1996 D0338516'Electromagnetic valve'1993 D0338258'Electromagnetic valve'1993 D0335172'Electromagnetic valve'1993 5,188,078'Throttle valve assembly'1993 5,101,784'Throttle valve'1992 4,934,341'Throttle actuator of internal combustion engine'1990 4,534,381'Electromagnetic valve'1985 4,344,603'Electromagnetic valve apparatus with a hand-operated transfer device'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2009Based in Asahi-mura, JP· patent location history

1985Based in Chiba, JP· patent location history

1990–2008Patents assigned to HITACHI LTD (8)· patent assignee history

1990–1996Based in Katsuta, JP· patent location history

1993Patents assigned to KURODA SEIKO COMPANY LTD (3)· patent assignee history

1993Patents assigned to HITACHI ENG CO LTD (1)· patent assignee history

1996Patents assigned to HITACHI LTD AND HITACHI AUTOMO (1)· patent assignee history

1997–2008Patents assigned to HITACHI CAR ENG CO LTD (5)· patent assignee history

1997–2008Based in Hitachinaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	8	1990–2008
HITACHI CAR ENG CO LTD	5	1997–2008
KURODA SEIKO COMPANY LTD	3	1993
HITACHI ENG CO LTD	1	1993
HITACHI LTD AND HITACHI AUTOMO	1	1996

Locations

Location	Patents	Span
Hitachinaka, JP	6	1997–2008
Asahi-mura, JP	5	1982–2009
Katsuta, JP	4	1990–1996
Chiba, JP	1	1985