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USPTO Patent Rankings Data through Dec 31, 2025
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Robert Choi — 5 Patents

KRKellogg Brown & Root: 5 patents #23 of 240Top 10%
Houston, TX: #4,540 of 21,073 inventorsTop 25%
Texas: #28,633 of 125,132 inventorsTop 25%
Overall (All Time): #907,971 of 4,157,543Top 25%
5 Patents All Time
Robert Choi has been granted 5 US patents while listed as an inventor at Kellogg Brown & Root. The first was granted in 2024 and the most recent in September 2025. Robert Choi ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Robert Choi in Houston, TX, US.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
12415963 Hydrogenation of acetylenes in a hydrocarbon stream David Sellinger, Quo-Chen Yeh, Alok Mani Srivastava, Kristine E. Hamilton, Michael A. Radzicki 2025-09-16
12180154 Upgrading streams comprising C3 and C4 hydrocarbons David Sellinger, Quo-Chen Yeh, Alok Mani Srivastava, Kristine E. Hamilton, Michael A. Radzicki 2024-12-31
12168638 Dimerization of cyclopentadiene from side stream from debutanizer David Sellinger, Quo-Chen Yeh, Alok Mani Srivastava, Kristine E. Hamilton, Michael A. Radzicki 2024-12-17
12037553 Hydrogenation of acetylenes in a hydrocarbon stream David Sellinger, Quo-Chen Yeh, Alok Mani Srivastava, Kristine E. Hamilton, Michael A. Radzicki 2024-07-16
11884608 Dimerization of cyclopentadiene from side stream from debutanizer David Sellinger, Quo-Chen Yeh, Alok Mani Srivastava, Kristine E. Hamilton, Michael A. Radzicki 2024-01-30