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Analysis of very low frequencies
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CPC
G01R23/177
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Parent Industries
G
PHYSICS
G01
Measuring instruments
G01R
MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES
G01R23/00
Arrangements for measuring frequencies Arrangements for analysing frequency spectra
Current Industry
G01R23/177
Analysis of very low frequencies
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Patents Grants
last 30 patents
Information
Patent Grant
Wind turbine and method for detecting low-frequency oscillations in...
Patent number
11,899,050
Issue date
Feb 13, 2024
Wobben Properties GmbH
Aramis Schwanka Trevisan
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Signal processing method and material testing machine
Patent number
11,092,630
Issue date
Aug 17, 2021
Shimadzu Corporation
Tohru Matsuura
G01 - MEASURING TESTING
Information
Patent Grant
Method for evaluating a frequency spectrum
Patent number
10,823,595
Issue date
Nov 3, 2020
Grundfos Holding a/s
Ole Hartlev Pedersen
G01 - MEASURING TESTING
Information
Patent Grant
Dual mode tone detector circuit
Patent number
4,410,762
Issue date
Oct 18, 1983
Motorola, Inc.
Lawrence M. Ecklund
G01 - MEASURING TESTING
Information
Patent Grant
Multiple thin film absorption of reflected substrate modes in waveg...
Patent number
4,372,642
Issue date
Feb 8, 1983
The United States of America as represented by the Secretary of the Navy
Arnold H. Singer
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
WIND TURBINE AND METHOD FOR DETECTING LOW-FREQUENCY OSCILLATIONS IN...
Publication number
20210341523
Publication date
Nov 4, 2021
WOBBEN PROPERTIES GMBH
Aramis SCHWANKA TREVISAN
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
WIND TURBINE AND METHOD FOR DETECTING LOW-FREQUENCY OSCILLATIONS IN...
Publication number
20210208186
Publication date
Jul 8, 2021
WOBBEN PROPERTIES GMBH
Johannes BROMBACH
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Method for Detecting Normal Harmonics of Earths Electromagnetic Atm...
Publication number
20190310293
Publication date
Oct 10, 2019
Andres Herbert Montoya Urquizo
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
SIGNAL PROCESSING METHOD AND MATERIAL TESTING MACHINE
Publication number
20190187195
Publication date
Jun 20, 2019
Shimadzu Corporation
Tohru MATSUURA
G01 - MEASURING TESTING