Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Alexander E. Kuperman — 99 Patents

Chevron: 93 patents #15 of 4,788Top 1%
University of California: 4 patents #2,189 of 18,278Top 15%
EAE.I. Du Pont De Nemours And: 2 patents #5,983 of 12,129Top 50%
Dow Global Technologies: 1 patents #2,632 of 4,534Top 60%
San Ramon, CA: #18 of 2,140 inventorsTop 1%
California: #2,309 of 386,348 inventorsTop 1%
Overall (All Time): #14,805 of 4,157,543Top 1%
99 Patents All Time
Alexander E. Kuperman has been granted 99 US patents while listed as an inventor at Chevron. The first was granted in 2001 and the most recent in September 2025. Alexander E. Kuperman ranks #14,805 of 4,157,543 US inventors in our database (top 0.36%). Patent records list Alexander E. Kuperman in San Ramon, CA, US.

Issued Patents All Time

Showing 1–25 of 99 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12404171 Alternating fixed and fluidized bed reactor systems and processes Huping Luo, Lin Li, Xiaoying Ouyang 2025-09-02
12384975 Multi-tube reactor systems and processes for no-oxidative conversion of methane Lin Li, Huping Luo, Xiaoying Ouyang 2025-08-12
12011710 Tetrametallic bulk hydroprocessing catalysts Xiaoying Ouyang, Viorel Duma, Ibrahim J. Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait +1 more 2024-06-18 $368,304,000
11951458 Tetrametallic bulk hydroprocessing catalysts Xiaoying Ouyang, Viorel Duma, Ibrahim J. Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait +1 more 2024-04-09 $1,532,021,000
11781076 Multi-tube reactor systems and processes for no-oxidative conversion of methane Lin Li, Huping Luo, Xiaoying Ouyang 2023-10-10 $762,773,000
11731112 Tetrametallic bulk hydroprocessing catalysts Xiaoying Ouyang, Viorel Duma, Ibrahim J. Uckung, Theodorus Ludovicus Michael Maesen, Axel Brait +1 more 2023-08-22 $400,064,000
11707733 Multi-metallic bulk hydroprocessing catalysts Xiaoying Ouyang 2023-07-25 $448,107,000
11707732 Multi-metallic bulk hydroprocessing catalysts Xiaoying Ouyang 2023-07-25 $448,107,000
11707735 Multi-metallic bulk hydroprocessing catalysts Xiaoying Ouyang 2023-07-25 $448,107,000
11577235 Layered catalyst reactor systems and processes for hydrotreatment of hydrocarbon feedstocks Axel Brait, Xiaoying Ouyang, Theodorus Ludovicus Michael Maesen 2023-02-14 $822,202,000
11041128 Catalytic remedy for advanced UCO bleed reduction in recycle hydrocracking operations Theodorus Ludovicus Michael Maesen, Derek Blackwell, Viorel Duma, Varut Komalarajun, Hyunuk Ryu +3 more 2021-06-22 $733,078,000
10968405 Catalytic remedy for advanced UCO bleed reduction in recycle hydrocracking operations Theodoras Ludovicus Michael Maesen, Derek Blackwell, Viorel Duma, Varut Komalarajun, Hyunuk Ryu +3 more 2021-04-06 $1,471,726,000
9919987 Naphthene ring opening over self-supported multi-metallic catalysts Bi-Zeng Zhan 2018-03-20 $135,997,000
9809870 Process for separating and recovering metals Rahul Shankar Bhaduri, Louis Joseph Nordrum 2017-11-07 $124,407,000
9803154 Process for preparing a para-branched alkyl-substituted hydroxyaromatic compound Cedrick Mahieux, Curtis B. Campbell 2017-10-31
9776181 Hydroconversion multi-metallic catalyst and method for making thereof Theodorus Ludovicus Michael Maesen, Dennis Dykstra 2017-10-03 $242,366,000
9687823 Hydroprocessing co-catalyst compositions and methods of introduction thereof into hydroprocessing units Julie Chabot, Bo Kou 2017-06-27 $166,301,000
9669396 Hydrocracking catalyst and process using a magnesium aluminosilicate clay Theodorus Ludovicus Michael Maesen, Darren P. Fong 2017-06-06 $107,140,000
9504993 Hydroconversion multi-metallic catalysts and method for making thereof Jinyi Han 2016-11-29 $257,411,000
9446998 Paraffinic jet and diesel fuels and base oils from vegetable oils via a combination of hydrotreating, paraffin disproportionation and hydroisomerization Cong-Yan Chen, Dennis J. O'Rear, Thomas Francis Finger, Stephen J. Miller 2016-09-20 $301,074,000
9376359 Process for preparing a para-linear alkyl-substituted hydroxyaromatic compound Cedrick Mahieux, Curtis B. Campbell 2016-06-28
9327274 Hydroconversion multi-metallic catalyst and method for making thereof Jinyi Han 2016-05-03 $516,782,000
9327275 Hydroconversion multi-metallic catalysts and method for making thereof Jinyi Han, Theodorus Ludovicus Michael Maesen, Horacio Trevino 2016-05-03 $516,782,000
9321037 Hydroprocessing co-catalyst compositions and methods of introduction thereof into hydroprocessing units Julie Chabot, Bo Kou 2016-04-26 $525,922,000
9295983 Calixarene-bound iridium-containing metal colloids Alexander Katz, Namal De Silva, Andrew Solovyov, Cong-Yan Chen, Partha Nandi +2 more 2016-03-29 $235,304,000