LexDanaLexDanabeta
Inventor

Mamoru Sekiya

Inventor
Neyagawa, JP

Overview

19→
Patents
1978–2017
Patent span
Electricity
Primary field (CPC H)

Patents· 19 as inventor

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

H03Fprimary
H03FAmplifiers28%
H03KPulse technique16%
H03MCoding13%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers9%
G11BInformation storage based on relative movement between record carrier and transducer6%
G11CStatic stores6%
H03HImpedance networks, e.g. resonant circuits6%
F16FSprings3%
H04BTransmission3%
H04LTransmission of digital information, e.g. telegraphic communication3%
PatentTitleYear
9,787,319'Signal modulation circuit'20179,590,654'Signal modulation circuit'20179,350,378'Signal modulation circuit'20169,287,867'Pulse synthesizing circuit'20169,240,783'Pulse synthesizing circuit'20168,970,269'Pulse width modulator and switching amplifier'20158,570,083'Pulse width modulation circuit and switching amplifier using the same'20138,552,802'Amplifying circuit and current-voltage conversion circuit'20138,310,307'Amplifying circuit'20127,835,538'Loudspeaker'20107,773,373'Vibration-damping structure for audio apparatus'20107,710,175'Pulse width modulation circuit and switching amplifier using the same'20107,652,358'Semiconductor device including main substrate and sub substrates'20107,466,192'Low-pass filter and voltage-current conversion circuit used in the same'20087,456,668'Pulse width modulation circuit and switching amplifier using the same'20087,224,217'Switching amplifier'20076,697,002'Low-pass filter'20045,030,858'Prevention against noise of digital audio circuit'19914,072,907'Amplifier circuit'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1991Patents assigned to SHIN SHIRASUNA ELECTRIC CORP (2)· patent assignee history
1978Based in Nagoya, JP· patent location history
1991Based in Kani, JP· patent location history
2004–2017Patents assigned to ONKYO KK (16)· patent assignee history
2004–2013Based in Neyagawa, JP· patent location history
2012–2013Patents assigned to SEKIYA MAMORU (3)· patent assignee history
2012–2013Patents assigned to KAWAGUCHI TSUYOSHI (2)· patent assignee history
2012–2013Patents assigned to KITAGAWA NORIMASA (2)· patent assignee history
2012–2017Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
ONKYO KK162004–2017
SEKIYA MAMORUself32012–2013
KAWAGUCHI TSUYOSHI22012–2013
KITAGAWA NORIMASA22012–2013
SHIN SHIRASUNA ELECTRIC CORP21978–1991
Locations
LocationPatentsSpan
Neyagawa, JP92004–2013
Osaka, JP82012–2017
Kani, JP11991
Nagoya, JP11978