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Inventor

Koji Umezawa

Inventor
Susono, JP

Overview

6→
Patents
1995–2020
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 6 as inventor

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

B21Dprimary
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material11%
B23PMetal-working not otherwise provided for11%
F01LCyclically operating valves for machines or engines11%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general11%
F16DCouplings for transmitting rotation11%
G11BInformation storage based on relative movement between record carrier and transducer11%
Y02TClimate change mitigation technologies related to transportation11%
Y10TTechnical subjects covered by former us classification11%
F02DControlling combustion engines6%
Y02ATechnologies for adaptation to climate change6%
PatentTitleYear
10,626,775Exhaust purification system of internal combustion engine20209,181,837'Secondary air supply system for internal combustion engine'20155,668,681'Automatic-reverse tape player with a switchable rotational gear assembly'19975,598,631'Method of making machine element with at least a fitting member pressure-fitted on a shaft'19975,541,786'Loading apparatus for tape cassette including safety mechanism for protecting cassette housing and hanger structure from damage by externally applied force'19965,419,217'Machine element with at least a fitting member pressure-fitted on a shaft and method of making the same'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–1997Patents assigned to NIPPON PISTON RING CO LTD (2)· patent assignee history
1995–1997Based in Tochigi, JP· patent location history
1996–1997Patents assigned to SONY CORP (2)· patent assignee history
1996–1997Based in Kanagawa, JP· patent location history
2015–2020Patents assigned to TOYOTA MOTOR CO LTD (2)· patent assignee history
2015Patents assigned to KAWAMURA YUSUKE (1)· patent assignee history
2015Patents assigned to KONDO SHINYA (1)· patent assignee history
2015–2020Based in Susono, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIPPON PISTON RING CO LTD21995–1997
SONY CORP21996–1997
TOYOTA MOTOR CO LTD22015–2020
KAWAMURA YUSUKE12015
KONDO SHINYA12015
Locations
LocationPatentsSpan
Susono, JP22015–2020
Kanagawa, JP21996–1997
Tochigi, JP21995–1997