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Patents Grants
last 30 patents
Information
Patent Grant
Infrasound generating device based on a displacement-feedback type...
Patent number
9,539,616
Issue date
Jan 10, 2017
Zhejiang University
Wen He
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Grant
Electromagnetic vibration exciter system with adjustable electro-vi...
Patent number
9,099,943
Issue date
Aug 4, 2015
ZHEIJIANG UNIVERSITY
Wen He
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Vibration exciter system with a feedback control unit based on an o...
Patent number
9,097,603
Issue date
Aug 4, 2015
Zhejiang University
Wen He
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Grating external-cavity semiconductor laser and quasi-synchronous t...
Patent number
9,036,668
Issue date
May 19, 2015
National Institute of Metrology P.R. China
Erjun Zang
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Grating external-cavity semiconductor laser and quasi-synchronous m...
Patent number
8,953,649
Issue date
Feb 10, 2015
National Institute of Metrology P.R. China
Erjun Zang
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Three-phase electric energy measurement apparatus
Patent number
8,823,359
Issue date
Sep 2, 2014
National Institute of Metrology P.R. China
Zhigao Zhang
G01 - MEASURING TESTING
Information
Patent Grant
Monolithic folded F-P cavity and semiconductor laser using the same
Patent number
8,107,509
Issue date
Jan 31, 2012
National Institute of Metrology P.R. China
Erjun Zang
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Absolute measurement method and apparatus thereof for non-linear error
Publication number
20150009501
Publication date
Jan 8, 2015
NATIONAL INSTITUTE OF METROLOGY, P.R.CHINA
Ruoduan Sun
G01 - MEASURING TESTING
Information
Patent Application
INFRASOUND GENERATING DEVICE BASED ON A DISPLACEMENT-FEEDBACK TYPE...
Publication number
20140140179
Publication date
May 22, 2014
National Institute of Metrology P.R. China
Wen He
B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information
Patent Application
GRATING EXTERNAL-CAVITY SEMICONDUCTOR LASER AND QUASI-SYNCHRONOUS M...
Publication number
20140126589
Publication date
May 8, 2014
National Institute of Metrology P.R. China
Erjun ZANG
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
ELECTROMAGNETIC VIBRATION EXCITER SYSTEM WITH ADJUSTABLE ELECTRO-VI...
Publication number
20130234628
Publication date
Sep 12, 2013
NATIONAL INSTITUTE OF METROLOGY , P.R. CHINA
Wen He
G01 - MEASURING TESTING
Information
Patent Application
VIBRATION EXCITER SYSTEM WITH A FEEDBACK CONTROL UNIT BASED ON AN O...
Publication number
20130162179
Publication date
Jun 27, 2013
National Institute of Metrology P.R. China
Wen He
G01 - MEASURING TESTING
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