Chen, Changhua

USPTO Trademark & Patent Filings

Trademark applications and grants for Chen, Changhua. Chen, Changhua has 3 trademark applications. The latest application filed is for "VZA"

Company Profile

Chen, Changhua
changhua chen
CHEN; Changhua - Nanjing CN
Chen; Changhua - Nanjing Jiangsu
Chen; Changhua - Beijing CN
Chen; Changhua - Jiangsu CN

Entity Type	INDIVIDUAL
Address	No.24, group 2, Daqing Village Dawan Town, Zhongshan District,Guizhou Liupanshui CHINA 553012

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

Patent Applications

Patent Application	Date
PORTABLE WIRE CUTTING DEVICE FOR SAMPLING STEEL INGOT 20210107077 - 16/980432 HE; Lingjun ; et al.	2021-04-15
DUDOU-SHAPED TEST BLOCK 20210003537 - 16/980423 CHEN; Changhua ; et al.	2021-01-07
HEEL TEST BLOCK 20160231292 - 14/436688 Zhang; Li ; et al.	2016-08-11
Optical Coupler Having Anchored Cantilever Structure With Multi-Stage Inverse Taper Core Waveguide And Fabrication Method Thereof 20160041340 - 14/818715 Shi; Tuo ; et al.	2016-02-11
Silicon-Based Rib-Waveguide Modulator And Fabrication Method Thereof 20150378185 - 14/788746 Shi; Tuo ; et al.	2015-12-31
Ultrasonic flaw detector test block 11,366,084 - 16/980,423 Chen , et al. June 21, 2	2022-06-21
Portable wire cutting device for sampling steel ingot 11,045,888 - 16/980,432 He , et al. June 29, 2	2021-06-29
Polarization rotator-splitter/combiner based on silicon rib-type waveguides 9,977,187 - 14/715,429 Shi , et al. May 22, 2	2018-05-22
Optical coupler having anchored cantilever structure with multi-stage inverse taper core waveguide and fabrication method thereof 9,946,029 - 14/818,715 Shi , et al. April 17, 2	2018-04-17
Heel test block 9,810,667 - 14/436,688 Chen , et al. November 7, 2	2017-11-07

Patent Grants & Applications

Trademark Applications

Mark Image Registration \| Serial	Trademark Application Date
"VZA" 90399543	VZA 2020-12-21
"VZA" 90399552	VZA 2020-12-21
"VZA" 90399512	VZA 2020-12-21

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