Inventor

Akihiko Takenaka

Inventor

Anjo, JP

Overview

1985–2014

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 29 as inventor

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

F01Lprimary

F01LCyclically operating valves for machines or engines62%

Y10TTechnical subjects covered by former us classification10%

F02DControlling combustion engines8%

F02BInternal-combustion piston engines5%

F02PIgnition, other than compression ignition, for internal-combustion engines5%

F16HGearing3%

H02JElectric power networks3%

H02KDynamo-electric machines3%

Y02TClimate change mitigation technologies related to transportation3%

PatentTitleYear

8,776,745'Variable valve timing apparatus'2014 8,646,424'Variable valve timing device'2014 8,631,773'Valve timing adjuster'2014 8,453,614'Variable valve timing device for internal combustion engine and manufacturing method therefor'2013 8,286,601'Variable valve timing apparatus'2012 8,166,937'Valve timing control apparatus'2012 8,156,906'Valve timing controller'2012 7,950,361'Valve timing control apparatus'2011 7,564,145'Vehicle control apparatus'2009 7,458,351'Valve timing controller'2008 7,444,969'Variable valve timing apparatus'2008 7,278,386'Valve timing controller'2007 7,252,055'Valve controller'2007 7,081,063'Internal planetary gear mechanism'2006 6,920,855'Valve timing adjustment device'2005 6,883,482'Variable valve timing controller'2005 6,848,401'Valve timing adjusting device'2005 6,805,082'Valve timing adjustment device'2004 6,799,553'Variable valve timing controller'2004 6,779,499'Variable valve timing apparatus'2004 6,655,332'Valve timing adjusting apparatus'2003 6,439,184'Valve timing adjusting system of internal combustion engine'2002 6,378,476'Valve timing adjusting device'2002 6,378,475'Valve timing adjusting device'2002 5,483,930'Valve timing control device'1996 5,215,046'Rotational phase difference adjusting means'1993 4,627,393'Ignition distributor'1986 4,519,362'Rotational position detecting apparatus for internal combustion engines'1985 4,513,609'Electromagnetic rotation detecting apparatus'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1996Patents assigned to NIPPON DENSO CO (5)· patent assignee history

1985–1986Based in Kariya, JP· patent location history

1993–2014Based in Anjo, JP· patent location history

1996–2013Patents assigned to TOYOTA MOTOR CO LTD (6)· patent assignee history

2002–2014Patents assigned to DENSO CORP (19)· patent assignee history

2004–2008Patents assigned to NIPPON SOKEN (7)· patent assignee history

2012–2014Patents assigned to TAKENAKA AKIHIKO (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DENSO CORP	19	2002–2014
NIPPON SOKEN	7	2004–2008
TAKENAKA AKIHIKOself	7	2012–2014
TOYOTA MOTOR CO LTD	6	1996–2013
NIPPON DENSO CO	5	1985–1996

Locations

Location	Patents	Span
Anjo, JP	26	1993–2014
Kariya, JP	3	1985–1986