Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Clarence Chase — 15 Patents

ExxonMobil: 15 patents #742 of 10,161Top 8%
Bensalem, PA: #16 of 319 inventorsTop 6%
Pennsylvania: #4,990 of 74,527 inventorsTop 7%
Overall (All Time): #307,048 of 4,157,543Top 8%
15 Patents All Time
Clarence Chase has been granted 15 US patents while listed as an inventor at ExxonMobil. The first was granted in 2000 and the most recent in October 2025. Clarence Chase ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Clarence Chase in Bensalem, PA, US.

Patents per Year

Patents granted per year, 2000 to 2023Bar chart with a peak of 6 patents in 2017.peak 62000: 1 patents20002001: 1 patents20012015: 2 patents20152016: 2 patents20162017: 6 patents20172019: 1 patents20192023: 1 patents2023

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12435450 Pitch compositions for spinning into carbon articles and methods relating thereto Stuart Smith, Madhavi Vadlamudi, Robert Panepinto 2025-10-07
11746020 Sulfur-doped porous carbon derived from heavy hydrocarbons and methods for production thereof Yi Du, Bradley D. Wooler, Stuart Smith, Brenda A. Raich, Lesheng Wang 2023-09-05 $396,848,000
10427074 Electrofiltration apparatus and process Limin Song, Mohsen S. Yeganeh, Geoffrey Marshall Keiser 2019-10-01 $95,824,000
9777231 Hydrohalogenation of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes Man Kit Ng, Donna J. Crowther, Glen B. Brons, Hong Cheng, Patrick Brant 2017-10-03 $197,555,000
9745528 Ring opening cross metathesis of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes Man Kit Ng, Glen B. Brons, Matthew W. Holtcamp, Donna J. Crowther, Patrick Brant +1 more 2017-08-29 $91,700,000
9714393 Ring opening cross metathesis of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes Man Kit Ng, Glen B. Brons, Matthew W. Holtcamp, Donna J. Crowther, Patrick Brant +1 more 2017-07-25 $227,017,000
9663727 Functionalized polymers containing polyamine succinimide for antifouling in hydrocarbon refining processes Man Kit Ng, Mohsen S. Yeganeh, Timothy Andrew Barckholtz, Glen B. Brons, Hong Cheng +6 more 2017-05-30 $100,914,000
9617482 Functionalized polymers containing polyamine succinimide for demulsification in hydrocarbon refining processes Mohsen S. Yeganeh, Man Kit Ng, Timothy Andrew Barckholtz, Glen B. Brons, Hong Cheng +6 more 2017-04-11 $115,989,000
9540576 Hydrohalogenation of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes Man Kit Ng, Donna J. Crowther, Glen B. Brons, Hong Cheng, Patrick Brant 2017-01-10 $665,363,000
9441171 Functionalized polymers containing polyamine succinimide for antifouling in hydrocarbon refining processes ManKit Ng, Mohsen S. Yeganeh, Timothy Andrew Barckholtz, Glen B. Brons, Hong Cheng +6 more 2016-09-13 $138,948,000
9334460 Ring opening cross metathesis of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes ManKit Ng, Glen B. Brons, Matthew W. Holtcamp, Donna J. Crowther, Patrick Brant +1 more 2016-05-10 $268,960,000
9212326 Hydrohalogenation of vinyl terminated polymers and their functionalized derivatives for fouling mitigation in hydrocarbon refining processes ManKit Ng, Donna J. Crowther, Glen B. Brons, Hong Cheng, Patrick Brant 2015-12-15 $395,451,000
9085737 Functionalized polymers containing polyamine succinimide for demulsification in hydrocarbon refining processes Mohsen S. Yeganeh, ManKit Ng, Timothy Andrew Barckholtz, Glen B. Brons, Hong Cheng +6 more 2015-07-21 $351,725,000
6290755 Method for separating methane from natural gas using bisglycoluril derivatives Clarence D. Chang, Suzanne E. Schramm 2001-09-18 $510,121,000
6106594 Method for separating methane from natural gas using bisglycoluril derivatives Clarence D. Chang, Suzanne E. Schramm 2000-08-22