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Inventor

Yutaka Chiba

Inventor
Tokyo, JP

Overview

13→
Patents
1985–2019
Patent span
Electricity
Primary field (CPC H)

Patents· 13 as inventor

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

H04Bprimary
H04BTransmission9%
G05DSystems for controlling or regulating non-electric variables6%
H01QAntennas, i.e. radio aerials6%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner6%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h106%
Y10TTechnical subjects covered by former us classification6%
B21JForging3%
B21KMaking forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels3%
B23KSoldering or unsoldering3%
C07DHeterocyclic compounds3%
PatentTitleYear
10,250,245Input device which outputs a signal having a level corresponding to a state in which a voltage value of an input signal is higher or lower than a threshold value20199,773,721'Lead-free solder alloy, connecting member and a method for its manufacture, and electronic part'20178,841,559'Copper column'20148,408,515'Pressure-reducing valve'20138,181,668'Pressure reducing valve for gas'20127,555,324'Mobile terminal'20097,139,533'Mobile communication terminal'20066,714,090'Voltage controlled oscillator with enhanced sensitivity of change of oscillation frequency'20046,538,521'Voltage controlled oscillator'20035,840,928'Method for production of 3-formyl-tetrahydrofuran'19985,029,298'Transmitter circuit'19914,792,939'Duplex radio communication transceiver'19884,498,363'Just intonation electronic keyboard instrument'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2009Patents assigned to HITACHI LTD (4)· patent assignee history
1988–1991Based in Katsuta, JP· patent location history
2003–2004Patents assigned to ALPS ELECTRIC CO LTD (2)· patent assignee history
2003–2004Based in Fukushima, JP· patent location history
2012–2017Patents assigned to CHIBA YUTAKA (4)· patent assignee history
2012–2013Patents assigned to KEIHIN CORP (2)· patent assignee history
2012–2013Patents assigned to NAKAJIMA YOJI (2)· patent assignee history
2013Based in Kakuda, JP· patent location history
2014Based in Iwate, JP· patent location history
2017–2019Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHIBA YUTAKAself42012–2017
HITACHI LTD41988–2009
ALPS ELECTRIC CO LTD22003–2004
KEIHIN CORP22012–2013
NAKAJIMA YOJI22012–2013
Locations
LocationPatentsSpan
Tokyo, JP22017–2019
Fukushima, JP22003–2004
Katsuta, JP21988–1991
Iwate, JP12014
Kakuda, JP12013