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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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James Siebarth — 10 Patents

RERentech: 6 patents #8 of 35Top 25%
PEPioneer Energy: 4 patents #6 of 20Top 30%
Lakewood, CO: #79 of 1,100 inventorsTop 8%
Colorado: #4,661 of 40,980 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
James Siebarth has been granted 10 US patents while listed as an inventor at Rentech. The first was granted in 2004 and the most recent in January 2018. James Siebarth ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list James Siebarth in Lakewood, CO, US.

Patents per Year

Patents granted per year, 2004 to 2018Bar chart with a peak of 3 patents in 2017.peak 32004: 2 patents20042005: 1 patents20052007: 1 patents20072011: 1 patents20112013: 1 patents20132017: 3 patents20172018: 1 patents2018

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9856197 Systems and methods for manufacture of dimethyl ether (DME) from natural gas and flare gas feedstock Robert M. Zubrin, Boris Nizamov, Thomas Lee Henshaw, Adam M Kortan, Colin Apke +1 more 2018-01-02 $4,424,000
9725386 Systems and methods for manufacture of methanol from natural gas and flare gas feedstock Robert M. Zubrin, Boris Nizamov, Thomas Lee Henshaw, Adam M Kortan, Colin Apke +1 more 2017-08-08 $2,792,000
9643906 Systems and methods for manufacture of dimethyl ether (DME) from natural gas and flare gas feedstock Robert M. Zubrin, Boris Nizamov, Thomas Lee Henshaw, Adam M Kortan, Colin Apke +1 more 2017-05-09 $4,174,000
9637433 Systems and methods for manufacture of methanol from natural gas and flare gas feedstock Robert M. Zubrin, Boris Nizamov, Thomas Lee Henshaw, Adam M Kortan, Colin Apke +1 more 2017-05-02 $3,955,000
8431081 Method and apparatus for regenerating an iron-based Fischer-Tropsch catalyst Belma Demirel, Mark S. Bohn, Charles B. Benham, Mark D. Ibsen 2013-04-30 $5,449,000
7964156 Method and apparatus for regenerating an iron-based fischer-tropsch catalyst Belma Demirel, Mark S. Bohn, Charles B. Benham, Mark D. Ibsen 2011-06-21 $2,611,000
7303731 Method and apparatus for regenerating an iron-based fischer-tropsch catalyst Belma Demirel, Mark S. Bohn, Charles B. Benham, Mark D. Ibsen 2007-12-04 $4,901,000
6838487 Method and apparatus for regenerating an iron-based Fischer-Tropsch catalyst Belma Demirel, Mark S. Bohn, Charles B. Benham, Mark D. Ibsen 2005-01-04 $3,006,000
6730221 Dynamic settler Mark S. Bohn 2004-05-04 $1,784,000
6712982 Method of removing catalyst particles from wax Mark S. Bohn 2004-03-30 $1,668,000