Li; Huifen

Patent Applications and Registrations

Patent applications and USPTO patent grants for Li; Huifen.The latest application filed is for "anti-sagging gypsum product and a method to manufacture".

Company Profile

2.6.8

Li; Huifen - Shanghai N/A CN
Li; Huifen - Hung Hom HK

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

Patent Activity

Patent	Date
Anti-sagging gypsum product and a method to manufacture Grant 10,793,472 - Gao , et al. October 6, 2	2020-10-06
Chemical additive for gypsum products Grant 9,133,060 - Gao , et al. September 15, 2	2015-09-15
Illumination system for detecting the defect in a transparent substrate and a detection system including the same Grant 8,958,063 - Guo , et al. February 17, 2	2015-02-17
Anti-sagging Gypsum Product And A Method To Manufacture App 20150011138 - Gao; Xiaotong ; et al.	2015-01-08
Chemical Additive For Gypsum Products App 20150007753 - Gao; Xiaotong ; et al.	2015-01-08
Illumination System For Detecting The Defect In A Transparent Substrate And A Detection System Including The Same App 20140347657 - Guo; Xiaofeng ; et al.	2014-11-27
Method And System For Detecting And Classifying A Defect Of A Substrate App 20120133762 - Schweitzer; Jean-Philippe ; et al.	2012-05-31
Method And Device For Defect Inspection In Separated Transparent And/or Semi-transparent Body App 20120105624 - Lin; Xiaofeng ; et al.	2012-05-03
System And Method For Detecting A Defect Of A Substrate App 20110310244 - Schweitzer; Jean-Philippe ; et al.	2011-12-22
Methods and apparatus of aligning surfaces Grant 7,619,749 - Cheung , et al. November 17, 2	2009-11-17
Methods and apparatus of aligning surfaces App 20070195084 - Cheung; Chi-Fai ; et al.	2007-08-23

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