Inventor

Naruichi Yokogawa

Inventor

Kashihara, JP

Overview

1993–2012

Patent span

Electricity

Primary field (CPC H)

Patents· 18 as inventor

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

H04Bprimary

H04BTransmission26%

H03KPulse technique19%

H03FAmplifiers13%

G05FSystems for regulating electric or magnetic variables10%

G11BInformation storage based on relative movement between record carrier and transducer6%

H04LTransmission of digital information, e.g. telegraphic communication6%

G01SRadio direction-finding3%

G01VGeophysics3%

H03GControl of amplification3%

H04QSelecting3%

PatentTitleYear

8,217,335'Optical modulation-type detection device and electronic device'2012 8,050,572'Receiver and electronic device'2011 7,460,792'Receiving circuit and electronic apparatus for optical communication'2008 7,437,084'Infrared radiation receiving circuit, electronic device, and infrared radiation receiving method'2008 7,359,649'Infrared transmitter circuit and electronic device'2008 7,157,684'Receiving circuit for free-space optical communication'2007 7,061,303'Photoelectric leak current compensating circuit and optical signal circuit using same'2006 7,054,389'Carrier detection circuit and infrared ray remote control receiver'2006 6,812,546'Current mirror circuit and optical signal circuit using same'2004 6,762,596'Constant voltage circuit and infrared remote control receiver using the same'2004 6,693,466'Comparator circuit and infrared signal receiving apparatus'2004 6,677,732'Charge and/or discharge circuit, and carrier detector circuit using same'2004 6,480,311'Peak-hold circuit and an infrared communication device provided with such a circuit'2002 6,147,533'Data communication receiving elements'2000 6,137,101'Light receiving amplifying device'2000 6,038,049'Waveform-shaping circuit and a data-transmitting apparatus using such a circuit'2000 5,321,254'Light-receiving and amplyfying device capable of widening an AC operation range'1994 5,272,329'Optical pickup device using a holographic optical element and an amplifier'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–2012Patents assigned to SHARP KK (18)· patent assignee history

1993Based in Kitakatsuragi-gun, JP· patent location history

1994–2011Based in Kashihara, JP· patent location history

2012Patents assigned to HIRAMATSU TAKUMA (1)· patent assignee history

2012Patents assigned to KAWABE ISAMU (1)· patent assignee history

2012Patents assigned to TADA RYOHHEI (1)· patent assignee history

2012Patents assigned to YOKOGAWA NARUICHI (1)· patent assignee history

2012Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHARP KK	18	1993–2012
HIRAMATSU TAKUMA	1	2012
KAWABE ISAMU	1	2012
TADA RYOHHEI	1	2012
YOKOGAWA NARUICHIself	1	2012

Locations

Location	Patents	Span
Kashihara, JP	16	1994–2011
Osaka, JP	1	2012
Kitakatsuragi-gun, JP	1	1993