Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Ling Chu — 1 Patent in 2017

Pfizer: 1 patents #98 of 344Top 30%
Chelmsford, MA: #33 of 114 inventorsTop 30%
Massachusetts: #4,682 of 13,044 inventorsTop 40%
Overall (2017): #334,400 of 506,227Top 70%
1 Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
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