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Inventor

Keijiro Umehara

Inventor
Kyoto, JP

Overview

3→
Patents
2006–2007
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

G01Rprimary
G01RMeasuring electric variables33%
H03KPulse technique33%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses33%
PatentTitleYear
7,254,507'Analog circuit automatic calibration system'20077,030,688'Low-pass filter for a PLL, phase-locked loop and semiconductor integrated circuit'20066,982,581'Duty cycle correction circuit'2006

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2006–2007Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (3)· patent assignee history
2006–2007Based in Kyoto, JP· patent location history
2006Based in Uji, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD32006–2007
Locations
LocationPatentsSpan
Kyoto, JP22006–2007
Uji, JP12006