Inventor

Shigetaka Takada

Inventor

Ohbu, JP

Overview

1977–1988

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 22 as inventor

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

F02Dprimary

F02DControlling combustion engines30%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof29%

Y02TClimate change mitigation technologies related to transportation14%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

F01NGas-flow silencers or exhaust apparatus for machines or engines in general5%

Y10TTechnical subjects covered by former us classification4%

F04BPositive-displacement machines for liquids2%

H02KDynamo-electric machines2%

PatentTitleYear

4,726,746'Electrically-operated fuel pump'1988 4,657,189'Electromagnetic fuel injection valve for an internal combustion engine having a plurality of intake valves'1987 4,564,145'Electromagnetic fuel injector'1986 4,407,248'Electronically controlled carburetor'1983 4,385,339'Fuel injector for an internal combustion engine'1983 4,376,430'Air-fuel mixture ratio control device'1983 4,344,898'Carburetor controlling system'1982 4,320,730'Air-fuel mixture ratio control device'1982 4,314,535'Feedback type variable venturi carburetor'1982 4,300,505'Air fuel ratio control device'1981 4,300,490'Air-fuel mixture ratio correcting system for carburetor'1981 4,290,399'Floatless variable venturi type carburetor'1981 4,289,104'Air-fuel mixture supplying device for internal combustion engines'1981 4,287,864'Air-fuel mixture ratio control device'1981 4,276,745'Exhaust gas control apparatus'1981 4,271,667'Apparatus for controlling the amount of secondary air fed into an internal combustion engine'1981 4,254,754'Air fuel ratio controller'1981 4,216,753'Fuel air mixture supply system for use in fuel-injection-type internal combustion engine'1980 4,179,882'Apparatus for controlling the amount of secondary air fed into an internal combustion engine'1979 4,153,021'Air-fuel mixture ratio correcting system for carburetor'1979 4,052,968'Air-to-fuel ratio adjusting system for an internal combustion engine'1977 4,036,186'Air-fuel mixture ratio correcting system for carburetor'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1981Patents assigned to NIPPON SOKEN (4)· patent assignee history

1977–1987Based in Oobu, JP· patent location history

1979–1987Patents assigned to AISAN IND (16)· patent assignee history

1979–1987Patents assigned to TOYOTA MOTOR CO LTD (4)· patent assignee history

1979–1988Based in Obu, JP· patent location history

1981–1983Based in Ohbu, JP· patent location history

1983Patents assigned to IWAMA YOSHIRO (1)· patent assignee history

1988Patents assigned to ASIAN IND (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AISAN IND	16	1979–1987
NIPPON SOKEN	4	1977–1981
TOYOTA MOTOR CO LTD	4	1979–1987
ASIAN IND	1	1988
IWAMA YOSHIRO	1	1983

Locations

Location	Patents	Span
Ohbu, JP	9	1981–1983
Obu, JP	8	1979–1988
Oobu, JP	5	1977–1987