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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Changhee Lee — 3 Patents

Pfizer: 3 patents #1,614 of 5,153Top 35%
Guelph, CA: #179 of 736 inventorsTop 25%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Changhee Lee has been granted 3 US patents while listed as an inventor at Pfizer. The first was granted in 2009 and the most recent in March 2012. Changhee Lee ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Changhee Lee in Guelph, ON, CA.

Patents per Year

Patents granted per year, 2009 to 2012Bar chart with a peak of 1 patents in 2009.peak 12009: 1 patents20092011: 1 patents20112012: 1 patents2012

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8128937 N protein mutants of porcine reproductive and respiratory syndrome virus Dongwan Yoo, Jay Gregory Calvert, Siao-Kun W. Welch 2012-03-06 $602,209,000
7879337 Mutant porcine reproductive and respiratory syndrome virus Dongwan Yoo, Jay Gregory Calvert 2011-02-01 $668,261,000
7544362 N protein mutants of porcine reproductive and respiratory syndrome virus Dongwan Yoo, Jay Gregory Calvert, Siao-Kun W. Welch 2009-06-09 $377,913,000