Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
RP

Robert S. Pfeiffer — 19 Patents

LTLucan Technologies: 13 patents #1 of 14Top 8%
TTTransworld Technologies: 6 patents #1 of 16Top 7%
Parker, CO: #41 of 630 inventorsTop 7%
Colorado: #2,081 of 40,980 inventorsTop 6%
Overall (All Time): #239,581 of 4,157,543Top 6%
19 Patents All Time

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
9458375 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material Glenn Ulrich 2016-10-04
9434872 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2016-09-06
9057082 Generation of methane from hydrocarbon bearing materials Roland P. DeBruyn, James B. Dodson, Eric L. Szaloczi, Glenn Ulrich, Jeffrey L. Weber 2015-06-16
8794315 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2014-08-05
8770282 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material Glenn Ulrich 2014-07-08
8715978 Generation of hydrogen from hydrocarbon bearing materials Roland P. DeBruyn, James B. Dodson, Eric L. Szaloczi, Glenn Ulrich, Jeffrey L. Weber 2014-05-06
8479813 Biogenic fuel gas generation in geologic hydrocarbon deposits Verlin Dannar, Roland P. DeBruyn, Shane Bower, Glenn Ulrich, Jeffrey L. Weber +4 more 2013-07-09
8302683 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2012-11-06
8092559 Generation of hydrogen from hydrocarbon bearing materials Roland P. DeBruyn, James B. Dodson, Eric L. Szaloczi, Glenn Ulrich, Jeffrey L. Weber 2012-01-10
8067223 Thermacetogenium phaeum consortium for the production of materials with enhanced hydrogen content Glenn Ulrich, Gary Vanzin 2011-11-29
8051908 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2011-11-08
7975762 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2011-07-12
7977282 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material Glenn Ulrich, Roland P. DeBruyn, Gary Vanzin 2011-07-12
7871792 Thermacetogenium phaeum consortium for the production of materials with enhanced hydrogen content Glenn Ulrich, Gary Vanzin 2011-01-18
7845403 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2010-12-07
7696132 Chemical amendments for the stimulation of biogenic gas generation in deposits of carbonaceous material Glenn Ulrich, Mark Finkelstein 2010-04-13
7640978 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2010-01-05
7426960 Biogenic fuel gas generation in geologic hydrocarbon deposits Glenn Ulrich, Gary Vanzin, Verlin Dannar, Roland P. DeBruyn, James B. Dodson 2008-09-23
7416879 Thermacetogenium phaeum consortium for the production of materials with enhanced hydrogen content Glenn Ulrich, Gary Vanzin 2008-08-26