Ling Chu — 10 Patents at Pfizer

Ling Chu has been granted 10 US patents while listed as an inventor at Pfizer. The first was granted in 1998 and the most recent in October 2025. Ling Chu ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Ling Chu in Chelmsford, MA, US.

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12451687	Semiconductor device and electrostatic discharge clamp circuit	Wun-Jie Lin	2025-10-21
12444934	Electrostatic discharge (ESD) protection circuit and method of operating the same	Tao Yi Hung, Ming-Fang Lai, Wun-Jie Lin, Jang Kun Lee	2025-10-14
12438003	Semiconductor structure and manufacturing method thereof	Yuefeng Liao, Hun-Wei Chen, Ching-Keu Chang, Ming-Horng Tsai, Ying-Chung Su	2025-10-07
12128095	Escherichia coli compositions and methods thereof	Robert G. K. Donald, Annaliesa Sybil Anderson, Laurent Oliver Chorro, Jianxin Gu, Jin-Hwan Kim +11 more	2024-10-29	$505,385,000
11260119	Escherichia coli compositions and methods thereof	Robert G. K. Donald, Annaliesa Sybil Anderson, Laurent Oliver Chorro, Jianxin Gu, Jin-Hwan Kim +11 more	2022-03-01	$2,086,821,000
11059876	IL-15 variants and uses thereof	Yik Andy Yeung, Reid M. Renny Feldman, Javier Fernando Chaparro Riggers, Ivana Djuretic, Laura Lin +1 more	2021-07-13	$442,539,000
9675681	Shortened purification process for the production of capsular Streptococcus pneumoniae polysaccharides	Yonghui Yuan, Mark Edward Ruppen, Wei Sun, John McLean Simpson, James Patch +2 more	2017-06-13
8999697	Shortened purification process for the production of capsular Streptococcus pneumoniae polysaccharides	Yonghui Yuan, Mark Edward Ruppen, Wei Sun, John McLean Simpson, James Patch +2 more	2015-04-07
8652480	Shortened purification process for the production of capsular Streptococcus pneumoniae polysaccharides	Yonghui Yuan, Mark Edward Ruppen, Wei Sun, John McLean Simpson, James Patch +2 more	2014-02-18
5776486	Methods and apparatus for making liposomes containing hydrophobic drugs	Trevor Percival Castor	1998-07-07

Ling Chu — 10 Patents

Issued Patents All Time

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