LexDanaLexDanabeta
Inventor

Kenji Maio

Inventor
Tokyo, JP

Overview

30→
Patents
1978–2015
Patent span
Electricity
Primary field (CPC H)

Patents· 30 as inventor

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

H03Mprimary
H03MCoding23%
A61BDiagnosis8%
G01SRadio direction-finding8%
H03GControl of amplification8%
G01TMeasurement of nuclear or x-radiation6%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation6%
B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general4%
B60TVehicle brake control systems or parts thereof4%
G01NInvestigating or analysing materials by determining their chemical or physical properties4%
G10KSound-producing devices4%
PatentTitleYear
9,157,990'Ultrasonic transmitting/receiving circuit and ultrasonic diagnostic apparatus'20159,022,941'Ultrasonic diagnostic apparatus and carrier signal generating circuit'20159,007,872'Ultrasonic diagnostic apparatus and method thereof'20158,579,823'Ultrasonic diagnostic apparatus and ultrasonic probe used in same'20137,005,922'Variable gain amplifier circuit and gain control method thereof'20066,927,628'Gain-control method and device for cascaded amplifiers'20056,867,936'Driving circuit for a magnetic head and magnetic recording apparatus'20056,734,730'Variable gain amplifier'20046,717,471'Automatic gain adjustment circuit and amplifier using the same'20046,573,578'Photo semiconductor integrated circuit device and optical recording reproducing apparatus'20036,509,854'DA conversion circuit'20035,041,729'Radiation detector and manufacturing process thereof'19914,982,095'Multi-element type radiation detector'19914,937,579'Method of converting analog signals into digital signals and system for carrying out the method'19904,875,048'Two-step parallel analog to digital converter'19894,866,444'Analog-to-digital converter'19894,851,845'Encoder'19894,752,767'DA converter'19884,752,766'Analog to digital converter'19884,733,088'Radiation detector'19884,578,646'Integral-type small signal input circuit'19864,549,166'Digital-to-analog converter using a feedback element matching technique'19854,381,495'Digital-to-analog converter with error compensation'19834,340,882'D/A Conversion system with compensation circuit'19824,316,178'Digital-to-analog conversion system with compensation circuit'19824,293,819'High-speed low-drift operational amplifier'19814,197,486'Control system for deflecting an electron beam'19804,132,085'Control apparatus including an electronic timer'19794,125,825'System for detecting a failure in a vehicle velocity detector and a wheel velocity detector'19784,073,545'Vehicle brake controlling device for anti-skid control of vehicle wheels'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2015Based in Tokyo, JP· patent location history
1978–1982Based in Hinode, JP· patent location history
1979–2006Patents assigned to HITACHI LTD (20)· patent assignee history
1979Based in Kokubunji, JP· patent location history
1980–1982Patents assigned to NIPPON TELEGRAPH & TELEPHONE (4)· patent assignee history
1986–2015Patents assigned to HITACHI MEDICAL CORP (6)· patent assignee history
1988–1991Based in Suginami-ku, JP· patent location history
1991Based in Sugniami, JP· patent location history
2013–2015Patents assigned to MAIO KENJI (4)· patent assignee history
2015Patents assigned to HATAYAMA KANAKO (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD201979–2006
HITACHI MEDICAL CORP61986–2015
MAIO KENJIself42013–2015
NIPPON TELEGRAPH & TELEPHONE41980–1982
HATAYAMA KANAKO32015
Locations
LocationPatentsSpan
Tokyo, JP221978–2015
Suginami-ku, JP31988–1991
Hinode, JP31978–1982
Sugniami, JP11991
Kokubunji, JP11979