Zhong Yan has been granted 5 US patents while listed as an inventor at Unknown . The first was granted in 1992 and the most recent in August 2024. Zhong Yan ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Zhong Yan in Shanghai, CN.
Patents per Year Patents granted per year, 1992 to 2024 Bar chart with a peak of 1 patents in 1992. peak 1 1992: 1 patents 1992 1999: 1 patents 1999 2000: 1 patents 2000 2021: 1 patents 2021 2024: 1 patents 2024
Issued Patents All Time
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Showing 1–5 of 5 patents
Patent # Title Co-Inventors Date
12058808 Printed circuit board, communications device, and manufacturing method Wenliang Li , Zewen Wang , Xusheng Liu , Ertang Xie , Wang XIONG 2024-08-06
11015717 Automatic back-pressure valve for use in supercritical fluid chromatographic system Jie Liu , Yan Zhang , Zhiling LI 2021-05-25
6140778 Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like David A. Pringle , David McDonald , George C. Johnson 2000-10-31
5982112 Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like David A. Pringle , David McDonald , George C. Johnson 1999-11-09
5150012 Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like David A. Pringle , David McDonald 1992-09-22
