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USPTO Patent Rankings Data through Dec 31, 2025
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Xiaoping Mao — 15 Patents

AVAvanex: 4 patents #18 of 269Top 7%
MCMci Communications: 4 patents #63 of 579Top 15%
WOWorlds.Com: 3 patents #10 of 246Top 5%
MWMci Worldcom.: 2 patents #8 of 165Top 5%
ACAccuwave: 1 patents #6 of 8Top 75%
ATAT&T: 1 patents #10,636 of 18,772Top 60%
State College, PA: #65 of 1,195 inventorsTop 6%
Pennsylvania: #4,990 of 74,527 inventorsTop 7%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Xiaoping Mao has been granted 15 US patents while listed as an inventor at Avanex. The first was granted in 1995 and the most recent in May 2006. Xiaoping Mao ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Xiaoping Mao in State College, PA, US.

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7054559 Method and system for modular multiplexing and amplification in a multi-channel plan Viet Le 2006-05-30
7016610 Self-adjusting optical add-drop multiplexer and optical networks using same Guohua Xiao, Lintao Zhang, Xiaofan Cao 2006-03-21 $10,787,000
6721509 Self-adjusting optical add-drop multiplexer and optical networks using same Guohua Xiao, Lintao Zhang, Xiaofan Cao 2004-04-13 $12,819,000
6704510 PMD characterization across multiple optical channels of an optical link Andrew Robinson 2004-03-09
6681081 Method of avoiding excessive polarization mode dispersion in an optical communications link 2004-01-20
6493116 PMD characterization across multiple optical channels of an optical link Andrew Robinson 2002-12-10
6396606 Method of avoiding excessive polarization mode dispersion in an optical communications link 2002-05-28
6310690 Dense wavelength division multiplexer utilizing an asymmetric pass band interferometer Simon Cao 2001-10-30 $5,225,000
6310993 Method and apparatus for chromatic dispersion compensation and dispersion slope compensation in wavelength division multiplexed systems utilizing a channel separator and virtually imaged phased arrays Simon Cao, Guohua Xiao 2001-10-30 $5,225,000
6111675 System and method for bi-directional transmission of telemetry service signals using a single fiber Glenn A. Wellbrock, Harold Clay Wispell, II 2000-08-29 $1,169,703,000
6043914 Dense WDM in the 1310 nm band Joseph C. Cook 2000-03-28
5926590 Power equalizer in a multiple wavelength bidirectional lightwave amplifier 1999-07-20
5796096 Fabrication and applications of long-lifetime, holographic gratings in photorefractive materials George Rakuljic, Victor Leyva, Amnon Yariv, Koichi Sayano, Arthur B. O'Connor +2 more 1998-08-18
5689594 Multiple wavelength bidirectional lightwave amplifier 1997-11-18
5420868 Suppression of brillouin scattering in lightwave transmission system Andrew R. Chraplyvy, Robert William Tkach 1995-05-30