Qing Chen — 24 Patents at AT&T

Qing Chen has been granted 24 US patents while listed as an inventor at AT&T. The first was granted in 1999 and the most recent in September 2025. Qing Chen ranks #168,038 of 4,157,543 US inventors in our database (top 4.0%). Patent records list Qing Chen in Lo Wu, TX, CN.

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
D1094326	Holographic display container	Hongde Liu, Ying-Jen Chen	2025-09-23
12309350	Player, playing system, and playing method	Hongde Liu, Ying Chen	2025-05-20
12233313	Cycling detection method, electronic device and computer-readable storage medium	Xiaohan Chen, Teng Xu	2025-02-25
12010016	Data stream transmission method and device	Jun Zhou, Naiqiang Qiao, Qi Bu	2024-06-11
11755540	Chunking method and apparatus	Jun Zhou, Yi Kai, Qi Bu	2023-09-12
11695502	Packet processing method and apparatus, and chip	Jiyuan Shi, Jie Chen	2023-07-04
11683123	Packet processing method and apparatus, and computer storage medium	Jiyuan Shi, Mingli Zhang	2023-06-20
11362818	Method for issuing quantum key chip, application method, issuing platform and system	Xiang Xiao, Jiayi Lin, Songyan Ding, Jierong Chen	2022-06-14
10686623	System and method for dynamic bi-directional communication over a local interconnect network bus	—	2020-06-16
10616626	Method and system for analyzing user activities related to a video	Huamin Qu, Conglei Shi, Siwei Fu	2020-04-07
10427534	Infrared automobile charging system	—	2019-10-01
8855255	Systems and methods for optimizing timing phase in modem devices	Qian Cheng	2014-10-07
8505844	Method for operating a winding machine	Jörg Reh	2013-08-13	$647,000
7050523	Systems and methods for improving timing phase estimation	Qian Cheng	2006-05-23
D507247	Veta power converter	Randy Thomas Heinrich, Del Ray Hilburn, Victor Ke-Ji Lee	2005-07-12
6728118	Highly efficient, tightly regulated DC-to-DC converter	Victor Ke-Ji Lee	2004-04-27
6618274	Synchronous rectifier controller to eliminate reverse current flow in a DC/DC converter output	Jeffrey J. Boylan, Jin He, Del Ray Hilburn	2003-09-09
6297972	Backup power stage associated with a dual input power supply and method of operating the same	—	2001-10-02
6134122	Integrated voltage and current mode controller for a power converter and method of operation thereof	Del Ray Hilburn	2000-10-17	$40,305,000
6130830	System and method for paralleling power converter systems and power supply employing the same	Del Ray Hilburn	2000-10-10	$42,537,000
6055164	System and method for attenuating induced EMI and power converter employing the same	Rui Liu	2000-04-25	$64,347,000
6005377	Programmable digital controller for switch mode power conversion and power supply employing the same	Anatoly Feygenson, Ashraf W. Lotfi, Kenneth J. Timm	1999-12-21	$88,221,000
5877947	Snubber circuit for a rectifier and method of operation thereof	Victor Ke-Ji Lee	1999-03-02	$55,366,000
5874826	Encapsulated modular boost converter and method of manufacture therefor	Del Ray Hilburn, Ashraf W. Lotfi	1999-02-23	$154,145,000

Qing Chen — 24 Patents

Issued Patents All Time

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