Qian; Yifei

Patent Applications and Registrations

Patent applications and USPTO patent grants for Qian; Yifei.The latest application filed is for "power supply powering-on structure".

Company Profile

0.5.6

Qian; Yifei - Shanghai CN
Qian; Yifei - Jiangsu CN
Qian; Yifei - Nanjing Jiangsu
Qian; Yifei - Alpharetta GA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Power Supply Powering-On Structure App 20210018945 - Zhang; Ning ; et al.	2021-01-21
Power supply powering-on structure Grant 10,877,501 - Zhang , et al. December 29, 2	2020-12-29
Demodulation system for 3D-matrix multi-channel fiber optic sensing Grant 9,939,294 - Liu , et al. April 10, 2	2018-04-10
Optical fiber rotary squeezer polarization controller Grant 9,513,496 - Liu , et al. December 6, 2	2016-12-06
Optical Fiber Rotary Squeezer Polarization Controller App 20160070124 - Liu; Deguang ; et al.	2016-03-10
Demodulation System For 3d-matrix Multi-channel Fiber Optic Sensing App 20160025523 - Liu; Deguang ; et al.	2016-01-28
Method for the manufacture of optical fibers, improved optical fibers, and improved raman fiber amplifier communication systems Grant 6,952,517 - Kalish , et al. October 4, 2	2005-10-04
Raman fiber amplifier communication systems App 20050168803 - Kalish, David ; et al.	2005-08-04
Method for the manufacture of optical fibers, improved optical fibers, and improved Raman fiber amplifier communication systems Grant 6,904,217 - Kalish , et al. June 7, 2	2005-06-07
Method for the manufacture of optical fibers, improved optical fibers, and improved Raman fiber amplifier communication systems App 20040146260 - Kalish, David ; et al.	2004-07-29
Method for the manufacture of optical fibers, improved optical fibers, and improved raman fiber amplifier communication systems App 20040146259 - Kalish, David ; et al.	2004-07-29

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