LexDanaLexDanabeta
Inventor

Yukio Murata

Inventor
Tokyo, JP

Overview

60→
Patents
1984–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 60 as inventor

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

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers21%
H04MTelephonic communication12%
H04NPictorial communication, e.g. television8%
H10NElectric solid-state devices not otherwise provided for6%
B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general5%
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 systems5%
G10KSound-producing devices4%
G01SRadio direction-finding3%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light2%
G01RMeasuring electric variables2%
PatentTitleYear
10,720,847Semiconductor device for switching power supply and AC-DC convertor202010,491,128Power controlling semiconductor device, switched-mode power supply, and method of designing the device and power-supply201910,284,071Semiconductor device for controlling power source201910,170,906Semiconductor device for power supply control201910,128,762Semiconductor device for controlling power source201810,069,398Non-isolated power supply device20189,472,095'Electronic apparatus and control method for electronic apparatus'20169,386,367'Electronic apparatus with detachable speakers, a body unit and a control unit'20169,337,773'Oscillation device and electronic apparatus'20169,313,565'Portable terminal device having sound emission hole which changes orientation based on rotation of casing about biaxial hinge'20169,306,148'Oscillator device and electronic apparatus'20169,252,711'Oscillator and electronic device'20169,253,557'Electronic device'20169,247,338'Electroacoustic transducer'20169,185,495'Oscillation device and electronic apparatus'20159,179,214'Audio equipment and oscillation unit'20159,137,608'Actuator, piezoelectric actuator, electronic device, and method for attenuating vibration and converting vibration direction'20159,116,224'Electronic device'20159,095,880'Oscillator'20159,093,953'Oscillator'20158,913,767'Electro-acoustic transducer, electronic apparatus, electro-acoustic conversion method, and sound wave output method of electronic apparatus'20148,907,733'Oscillator'20148,897,096'Oscillator and electronic device'20148,891,333'Oscillator and electronic device'20148,824,708'Oscillation device and electronic apparatus'20148,569,930'Piezoelectric actuator and audio components'20138,319,396'Piezo-electric actuator and electronic device'20128,148,876'Piezoelectric actuator and electronic apparatus'20128,139,762'Electronic device and acoustic playback method'20128,116,506'Speaker, image element protective screen, case of terminal and terminal'20128,081,779'Audio circuit'20117,750,540'Piezoelectric actuator and electronic device'20107,742,201'Control method for document scanning device'20107,499,735'Mobile station with sound speaker'20097,139,088'Communication apparatus and communication method'20066,958,832'Control method for document scanning device'20056,115,543'Data communication apparatus having a handy scanner'20005,992,296'Hydraulic pump'19995,875,037'Communication apparatus'19995,826,683'Magnetostrictive brake'19985,748,774'Image processing method and apparatus having a plurality of image processing modes'19985,701,354'Telephone mouthpiece for preventing wind noises and method for reducing wind noises input thereto'19975,673,119'Encoding processing apparatus'19975,566,254'Apparatus for processing multiple images in alternating fashion'19965,563,495'Charging circuit with battery charge monitor circuit'19965,509,067'Method and apparatus for speed dialing via one-touch and two-touch operation'19965,418,847'Communication terminal apparatus'19955,379,450'Radio loudspeaker telephone device capable of automatically preventing howling on execution of calling operation'19955,212,722'Hands-free telephone having a handset volume attenuator for controlling speaker volume in a hands-free adaptor'19935,170,491'Power source switch circuit'19925,151,645'Charge device capable of lengthening a lifetime of a storage cell'19925,128,991'Dialing confirmation tone output apparatus'19924,922,547'Microphone circuit'19904,799,110'Image signal coding apparatus'19894,782,202'Method and apparatus for resistance adjustment of thick film thermal print heads'19884,750,043'Decoding apparatus for image code'19884,635,213'Method of estimating the result of coloration and of reproducing a given color'19874,613,947'Method of measuring color difference of dyestuffs'19864,597,670'Method of measuring color difference of dyestuffs'19864,437,811'Submersible pump with alternate pump operation control means'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2016Based in Kawasaki, JP· patent location history
1990–2016Patents assigned to NEC CORP (32)· patent assignee history
1990–2020Based in Tokyo, JP· patent location history
1995–1999Based in Yokohama, JP· patent location history
1995–2009Based in Saitama, JP· patent location history
2011–2020Patents assigned to MURATA YUKIO (28)· patent assignee history
2011–2016Patents assigned to KURODA JUN (23)· patent assignee history
2012–2016Patents assigned to ONISHI YASUHARU (22)· patent assignee history
2014–2016Patents assigned to KISHINAMI YUICHIRO (18)· patent assignee history
2014–2016Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NEC CORP321990–2016
MURATA YUKIOself282011–2020
KURODA JUN232011–2016
ONISHI YASUHARU222012–2016
KISHINAMI YUICHIRO182014–2016
Locations
LocationPatentsSpan
Tokyo, JP251990–2020
Kanagawa, JP122014–2016
Yokohama, JP61995–1999
Saitama, JP51995–2009
Kawasaki, JP31988–2016