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Patents Grants
last 30 patents
Information
Patent Grant
Brillouin sensing system using optical microwave frequency discrimi...
Patent number
10,931,079
Issue date
Feb 23, 2021
Zibo Qi-Red PhotoElectric Technology Co., Ltd.
Shudong Wu
G01 - MEASURING TESTING
Information
Patent Grant
Polarization scrambler based on Faraday magneto-optic effect
Patent number
10,067,290
Issue date
Sep 4, 2018
Beijing Qi-Red PhotoElectric Technology Co., Ltd.
Shudong Wu
G02 - OPTICS
Information
Patent Grant
Polarization scrambler based on fiber wave plates
Patent number
9,971,092
Issue date
May 15, 2018
Beijing Qi-Red PhotoElectric Technology Co., Ltd.
Shudong Wu
G02 - OPTICS
Information
Patent Grant
Optic-microwave frequency discriminator for laser frequency differe...
Patent number
9,825,422
Issue date
Nov 21, 2017
Zibo Qi-red PhotoElectrical Technology Co., Ltd.
Shudong Wu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical fiber current transformer with optical fiber temperature ac...
Patent number
8,861,899
Issue date
Oct 14, 2014
Beijing Qi-Red Electric Power Technology Co., Ltd.
Shudong Wu
G01 - MEASURING TESTING
Information
Patent Grant
Optical fiber temperature sensor
Patent number
8,449,178
Issue date
May 28, 2013
Beijing Qi-Red Electric Power Technology Co., Ltd.
Shudong Wu
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Brillouin sensing system using optical microwave frequency discrimi...
Publication number
20180278009
Publication date
Sep 27, 2018
Zibo Qi-Red PhotoElectric Technology Co., Ltd.
Shudong Wu
G01 - MEASURING TESTING
Information
Patent Application
Polarization scrambler based on fiber wave plates
Publication number
20170261690
Publication date
Sep 14, 2017
Beijing Qi-Red PhotoElectric Technology Co., Ltd.
Shudong Wu
G02 - OPTICS
Information
Patent Application
Polarization scrambler based on Faraday magneto-optic effect
Publication number
20170261773
Publication date
Sep 14, 2017
Beijing Qi-Red PhotoElectric Technology Co., Ltd.
Shudong Wu
G02 - OPTICS
Information
Patent Application
Optic-microwave frequency discriminator for laser frequency differe...
Publication number
20160248218
Publication date
Aug 25, 2016
Zibo Qi-red PhotoElectrical Technology Co., Ltd.
Shudong Wu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Optical fiber temperature sensor
Publication number
20110128990
Publication date
Jun 2, 2011
Beijing Qi-Red Electric Power Technology Co., Ltd.
Shudong Wu
G01 - MEASURING TESTING
Information
Patent Application
Optical fiber current transformer with optical fiber temperature ac...
Publication number
20110060544
Publication date
Mar 10, 2011
Beijing Qi-Red Electric Power Technology Co., Ltd.
Shudong Wu
G01 - MEASURING TESTING