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Inventor

Takehito Doi

Inventor
Kasugai, JP

Overview

11→
Patents
1992–2014
Patent span
Electricity
Primary field (CPC H)

Patents· 11 as inventor

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

H03Lprimary
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses15%
H03KPulse technique12%
G01CMeasuring distances, levels or bearings8%
G01DMeasuring not specially adapted for a specific variable8%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock8%
G01RMeasuring electric variables8%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems8%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner8%
H10DInorganic electric semiconductor devices8%
G06FElectric digital data processing4%
PatentTitleYear
8,922,181'Power control circuit performing soft start operation. power supply device, and electronic device'20148,049,539'Circuit with variation correction function'20117,777,474'DC-DC converter with oscillator and monitoring function'20107,250,773'Circuit for detecting difference in capacitance'20077,119,555'Circuit for detecting difference in capacitance'20066,853,257'PLL circuit including a voltage controlled oscillator and a method for controlling a voltage controlled oscillator'20056,757,349'PLL frequency synthesizer with lock detection circuit'20045,534,821'Charge pump circuits for PLL frequency synthesizer'19965,528,171'ECL-to-CMOS signal level converter'19965,388,055'Semiconductor integrated circuit having polycell structure and method of designing the same'19955,124,776'Bipolar integrated circuit having a unit block structure'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2007Patents assigned to FUJITSU LTD (8)· patent assignee history
1992–1996Patents assigned to FUJITSU VLSI LTD (2)· patent assignee history
1992Based in Yokohama, JP· patent location history
1995–2014Based in Kasugai, JP· patent location history
2010–2011Patents assigned to FUJITSU SEMICONDUCTOR LTD (2)· patent assignee history
2014Patents assigned to DOI TAKEHITO (1)· patent assignee history
2014Patents assigned to SPANSION LLC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD81992–2007
FUJITSU SEMICONDUCTOR LTD22010–2011
FUJITSU VLSI LTD21992–1996
DOI TAKEHITOself12014
SPANSION LLC12014
Locations
LocationPatentsSpan
Kasugai, JP101995–2014
Yokohama, JP11992