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USPTO Patent Rankings Data through Dec 31, 2025
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James L. Propp — 4 Patents

ExxonMobil: 4 patents #2,519 of 10,161Top 25%
Kingwood, TX: #232 of 726 inventorsTop 35%
Texas: #33,915 of 125,132 inventorsTop 30%
Overall (All Time): #1,080,739 of 4,157,543Top 30%
4 Patents All Time
James L. Propp has been granted 4 US patents while listed as an inventor at ExxonMobil. The first was granted in 2007 and the most recent in May 2012. James L. Propp ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list James L. Propp in Kingwood, TX, US.

Patents per Year

Patents granted per year, 2007 to 2012Bar chart with a peak of 1 patents in 2007.peak 12007: 1 patents20072008: 1 patents20082009: 1 patents20092012: 1 patents2012

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8183420 Preparation of alkylaromatic hydrocarbons and alkylaryl sulfonates Carolyn B. Duncan, David W. Turner, Jane C. Cheng, Charles M. Yarbrough, Raphael Frans Caers +1 more 2012-05-22 $124,440,000
7622621 Preparation of alkylaromatic hydrocarbons and alkylaryl sulfonates Carolyn B. Duncan, David W. Turner, Jane C. Cheng, Charles M. Yarbrough, Raphael Frans Caers +1 more 2009-11-24 $209,846,000
7390933 Reduction of the Bromine Index of linear alkylbenzenes Frederick Y. Lo, David L. Stern, Ronald J. Cimini 2008-06-24 $337,976,000
7214840 Reduction of the Bromine Index of linear alkylbenzenes Frederick Y. Lo, David L. Stern, Ronald J. Cimini 2007-05-08 $219,364,000