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Inventor

Tadashi Kumagai

Inventor
Fukushima, JP

Overview

8→
Patents
1977–2012
Patent span
Electricity
Primary field (CPC H)

Patents· 8 as inventor

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

H01Jprimary
H01JElectric discharge tubes or discharge lamps14%
C07KPeptides7%
C12NMicroorganisms or enzymes7%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general7%
F02FCylinders, pistons or casings, for combustion engines7%
F16DCouplings for transmitting rotation7%
F16HGearing7%
H03JTuning resonant circuits7%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses7%
H04NPictorial communication, e.g. television7%
PatentTitleYear
8,151,962'Synchromesh device for transmission'20128,127,638'Shift lever apparatus'20127,205,149'Gene of enzyme reactivating DNA damaged by ultraviolet light using visible light'20077,095,178'Plasma processing apparatus, method for operating the same, designing system of matching circuit, and plasma processing method'20066,954,033'Plasma processing apparatus'20054,433,541'Secondary air introducing apparatus for internal combustion engine'19844,225,829'Local oscillator circuit having two phase locked loops having respective frequency dividers with a common division ratio'19804,009,441'Multi-band television tuning apparatus'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2006Patents assigned to ALPS ELECTRIC CO LTD (4)· patent assignee history
1977–1980Based in Soma, JP· patent location history
1984Patents assigned to HONDA MOTOR CO LTD (1)· patent assignee history
2005–2006Based in Fukushima, JP· patent location history
2007Based in Sendai, JP· patent location history
2012Patents assigned to AISIN AI CO LTD (2)· patent assignee history
2012Patents assigned to KUMAGAI TADASHI (2)· patent assignee history
2012Patents assigned to ITOH TAKAMITSU (1)· patent assignee history
2012Based in Okazaki, JP· patent location history
2012Based in Nishio, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ALPS ELECTRIC CO LTD41977–2006
AISIN AI CO LTD22012
KUMAGAI TADASHIself22012
HONDA MOTOR CO LTD11984
ITOH TAKAMITSU12012
Locations
LocationPatentsSpan
Fukushima, JP22005–2006
Soma, JP21977–1980
Okazaki, JP12012
Nishio, JP12012
Sendai, JP12007