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Hiroki Iwai
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Saitama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
External force detecting method and external force detecting device
Patent number
9,016,128
Issue date
Apr 28, 2015
Nihon Dempa Kogyo Co., Ltd.
Mitsuaki Koyama
G01 - MEASURING TESTING
Information
Patent Grant
External force detecting device and external force detecting sensor
Patent number
8,966,980
Issue date
Mar 3, 2015
Nihon Dempa Kogyo Co., Ltd.
Mitsuaki Koyama
G01 - MEASURING TESTING
Information
Patent Grant
Tuning fork piezoelectric vibrator with clearance groove formed on...
Patent number
8,933,615
Issue date
Jan 13, 2015
Nihon Dempa Kogyo Co., Ltd.
Shunsuke Ueno
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Acceleration measuring apparatus
Patent number
8,919,201
Issue date
Dec 30, 2014
Nihon Dempa Kogyo Co., Ltd.
Mitsuaki Koyama
G01 - MEASURING TESTING
Information
Patent Grant
External force detection apparatus and external force detection sensor
Patent number
8,890,391
Issue date
Nov 18, 2014
Nihon Dempa Kogyo Co., Ltd.
Mitsuaki Koyama
G01 - MEASURING TESTING
Information
Patent Grant
Piezoelectric vibrating pieces and associated devices exhibiting en...
Patent number
8,736,152
Issue date
May 27, 2014
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Piezoelectric vibrating pieces and corresponding devices exhibiting...
Patent number
8,729,780
Issue date
May 20, 2014
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Tuning-fork type piezoelectric vibrating piece with enhanced freque...
Patent number
8,610,338
Issue date
Dec 17, 2013
Nihon Dempa Kogyo Co., Ltd.
Ryoichi Ichikawa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Surface mounted crystal resonator
Patent number
8,390,180
Issue date
Mar 5, 2013
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
B81 - MICRO-STRUCTURAL TECHNOLOGY
Information
Patent Grant
Piezoelectric vibrating devices having bisymmetric vibrating arms a...
Patent number
8,174,171
Issue date
May 8, 2012
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Piezoelectric frames and piezoelectric devices comprising same
Patent number
8,120,234
Issue date
Feb 21, 2012
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Piezoelectric devices having improved impact resistance
Patent number
8,110,965
Issue date
Feb 7, 2012
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Piezoelectric frames and piezoelectric devices comprising same
Patent number
8,110,966
Issue date
Feb 7, 2012
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Piezoelectric vibrating piece with extended supporting arms
Patent number
7,982,374
Issue date
Jul 19, 2011
Nihon Kempa Kogyo Co., Ltd.
Masahiro Yoshimatsu
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Tuning-Fork Type Piezoelectric Vibrating Piece and Piezoelectric De...
Publication number
20130119823
Publication date
May 16, 2013
NIHON DEMPA KOGYO CO., LTD.
Ryoichi ICHIKAWA
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Application
EXTERNAL FORCE DETECTION APPARATUS AND EXTERNAL FORCE DETECTION SENSOR
Publication number
20120326566
Publication date
Dec 27, 2012
NIHON DEMPA KOGYO CO., LTD.
MITSUAKI KOYAMA
G01 - MEASURING TESTING
Information
Patent Application
ACCELERATION MEASURING APPARATUS
Publication number
20120312097
Publication date
Dec 13, 2012
NIHON DEMPA KOGYO CO., LTD.
MITSUAKI KOYAMA
G01 - MEASURING TESTING
Information
Patent Application
PIEZOELECTRIC DEVICE
Publication number
20120293048
Publication date
Nov 22, 2012
NIHON DEMPA KOGYO CO., LTD.
Shunsuke UENO
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
External force detecting device and external force detecting sensor
Publication number
20120180568
Publication date
Jul 19, 2012
NIHON DEMPA KOGYO CO., LTD.
Mitsuaki KOYAMA
G01 - MEASURING TESTING
Information
Patent Application
External force detecting method and external force detecting device
Publication number
20120180567
Publication date
Jul 19, 2012
NIHON DEMPA KOGYO CO., LTD
Mitsuaki KOYAMA
G01 - MEASURING TESTING
Information
Patent Application
PIEZOELECTRIC VIBRATING PIECES, PIEZOELECTRIC DEVICES, AND METHODS...
Publication number
20110241495
Publication date
Oct 6, 2011
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
PIEZOELECTRIC VIBRATING PIECES AND PIEZOELECTRIC DEVICES COMPRISING...
Publication number
20110221311
Publication date
Sep 15, 2011
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Surface mounted crystal resonator
Publication number
20110156529
Publication date
Jun 30, 2011
NIHON DEMPA KOGYO CO., LTD.
Hiroki Iwai
B81 - MICRO-STRUCTURAL TECHNOLOGY
Information
Patent Application
Piezoelectric frames and piezoelectric devices comprising same
Publication number
20100164328
Publication date
Jul 1, 2010
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Piezoelectric frames and piezoelectric devices comprising same
Publication number
20100156246
Publication date
Jun 24, 2010
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Tuning-Fork Type Piezoelectric Vibrating Piece and Piezoelectric De...
Publication number
20100156237
Publication date
Jun 24, 2010
NIHON DEMPA KOGYO CO., LTD.
Ryoichi ICHIKAWA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
PIEZOELECTRIC VIBRATING PIECES AND PIEZOELECTRIC DEVICES COMPRISING...
Publication number
20100079036
Publication date
Apr 1, 2010
Nihon Dempa Kogyo Co., Ltd.
Hiroki Iwai
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
PIEZOELECTRIC DEVICES HAVING IMPROVED IMPACT RESISTANCE
Publication number
20100079040
Publication date
Apr 1, 2010
Nihon Dempa Kogyo Co., Ltd.
Hiroki IWAI
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
PIEZOELECTRIC VIBRATING PIECES, PIEZOELECTRIC DEVICES, AND METHODS...
Publication number
20090167118
Publication date
Jul 2, 2009
Nihon Dempa Kogyo Co., Ltd.
Masahiro Yoshimatsu
H03 - BASIC ELECTRONIC CIRCUITRY