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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Darryl P. Klein — 28 Patents

ExxonMobil: 21 patents #489 of 10,161Top 5%
ATAdvanced Refining Technologies: 6 patents #6 of 26Top 25%
Ellicott City, MD: #23 of 1,185 inventorsTop 2%
Maryland: #678 of 35,612 inventorsTop 2%
Overall (All Time): #134,628 of 4,157,543Top 4%
28 Patents All Time
Darryl P. Klein has been granted 28 US patents while listed as an inventor at ExxonMobil. The first was granted in 1998 and the most recent in February 2020. Darryl P. Klein ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list Darryl P. Klein in Ellicott City, MD, US.

Patents per Year

Patents granted per year, 1998 to 2020Bar chart with a peak of 5 patents in 2003.peak 51998: 1 patents19981999: 3 patents2000: 2 patents20002001: 4 patents2003: 5 patents20032004: 4 patents2005: 2 patents20052008: 1 patents2009: 1 patents20092010: 1 patents2011: 1 patents20112015: 1 patents2017: 1 patents20172020: 1 patents2020

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
10569254 Catalyst support and catalysts prepared therefrom Nan Chen, Matthew P. Woods, Bruno Nesci 2020-02-25
9605216 Catalyst support and catalysts prepared therefrom Nan Chen, Matthew P. Woods, Bruno Nesci 2017-03-28
8969242 Catalyst support and catalysts prepared therefrom Nan Chen, Matthew P. Woods, Bruno Nesci 2015-03-03
8021538 Hydroconversion catalysts and methods of making and using same 2011-09-20
7642212 Hydroconversion catalysts and methods of making and using same 2010-01-05
7560407 Hydroconversion catalysts and methods of making and using same 2009-07-14
7390766 Hydroconversion catalysts and methods of making and using same 2008-06-24
6929738 Two stage process for hydrodesulfurizing distillates using bulk multimetallic catalyst Kenneth L. Riley, Zhiguo Hou, Stuart L. Soled, Michael C. Kerby, Gary B. McVicker +3 more 2005-08-16 $723,806,000
6837989 Cycle oil conversion process Gordon F. Stuntz, George A. Swan, III, William E. Winter, Michel Daage, Michele S. Touvelle 2005-01-04 $138,076,000
6811682 Cycle oil conversion process Gordon F. Stuntz, George A. Swan, III, William E. Winter, Michel Daage, Michele S. Touvelle 2004-11-02 $124,486,000
6783663 Hydrotreating using bulk multimetallic catalysts Kenneth L. Riley, Zhiguo Hou, Stuart L. Soled, Michael C. Kerby, Gary B. McVicker +3 more 2004-08-31 $253,987,000
6723230 Regeneration of iron-based hydrogen sulfide sorbents Jingguang Chen, Leo D. Brown, William C. Baird, Jr., Gary B. McVicker, Edward S. Ellis +2 more 2004-04-20 $212,535,000
6683020 Naphthene ring opening over an iridium ring opening catalyst William C. Baird, Jr., Jingguang Chen, Gary B. McVicker 2004-01-27 $328,691,000
6652737 Production of naphtha and light olefins Michele S. Touvelle, Tan-Jen Chen, Luc R. M. Martens, Edward S. Ellis 2003-11-25 $105,544,000
6649043 Regeneration of hydrogen sulfide sorbents Jingguang Chen, Leo D. Brown, William C. Baird, Jr., Gary B. McVicker, Edward S. Ellis +2 more 2003-11-18 $120,208,000
6589416 Method and catalyst for opening naphthenic rings of naphthenic ring-containing compounds William C. Baird, Jr., Michele S. Touvelle, Jingguang Chen 2003-07-08 $152,657,000
6586650 Ring opening with group VIII metal catalysts supported on modified substrate William C. Baird, Jr., Michele S. Touvelle, Jingguang Chen, Gary B. McVicker 2003-07-01 $241,262,000
6582590 Multistage hydroprocessing using bulk multimetallic catalyst Kenneth L. Riley, Zhiguo Hou, Stuart L. Soled, Michael C. Kerby, Gary B. McVicker +3 more 2003-06-24 $246,176,000
6245221 Desulfurization process for refractory organosulfur heterocycles William C. Baird, Jr., Gary B. McVicker, James J. Schorfheide, Sylvain Hantzer, Michel Daage +4 more 2001-06-12 $261,619,000
6221240 Desulfurization and aromatic saturation of feedstreams containing refractory organosulfur heterocycles and aromatics Michele S. Touvelle, Edward S. Ellis, Carl W. Hudson, Sylvain Hantzer, Jingguang Chen +5 more 2001-04-24 $879,755,000
6193877 Desulfurization of petroleum streams containing condensed ring heterocyclic organosulfur compounds Gary B. McVicker, William C. Baird, Jr., James J. Schorfheide, Michel Daage, Edward S. Ellis +2 more 2001-02-27 $570,670,000
6187176 Process for the production of medicinal white oil Sylvain Hantzer, Alberto Ravella, Ian A. Cody 2001-02-13 $400,833,000
6103106 Desulfurization and ring opening of petroleum streams Gary B. McVicker, James J. Schorfheide, William C. Baird Jr., Michele S. Touvelle, Michel Daage +4 more 2000-08-15 $285,513,000
6087544 Process for the production of high lubricity low sulfur distillate fuels Robert J. Wittenbrink, Michele S. Touvelle, Michel Daage, Paul J. Berlowitz 2000-07-11 $227,809,000
5935420 Desulfurization process for refractory organosulfur heterocycles William C. Baird, Jr., Gary B. McVicker, James J. Schorfheide, Sylvain Hantzer, Michel Daage +4 more 1999-08-10 $165,064,000