Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Seh Ryu — 1 Patent

GDGulf Research & Development: 1 patents #73 of 106Top 70%
Murrysville, PA: #354 of 521 inventorsTop 70%
Pennsylvania: #43,533 of 74,527 inventorsTop 60%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Seh Ryu has been granted 1 US patent while listed as an inventor at Gulf Research & Development. All of these patents were granted in 1981. Seh Ryu ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Seh Ryu in Murrysville, PA, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4303127 Multistage clean-up of product gas from underground coal gasification John Freel, John C. Montagna 1981-12-01 $20,776,000