Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Daniel Francis Ryan — 34 Patents

ExxonMobil: 30 patents #290 of 10,161Top 3%
VEVelocys: 4 patents #55 of 139Top 40%
Brewster, MA: #1 of 32 inventorsTop 4%
Massachusetts: #2,544 of 88,656 inventorsTop 3%
Overall (All Time): #100,737 of 4,157,543Top 3%
34 Patents All Time
Daniel Francis Ryan has been granted 34 US patents while listed as an inventor at ExxonMobil. The first was granted in 1981 and the most recent in March 2018. Daniel Francis Ryan ranks #100,737 of 4,157,543 US inventors in our database (top 2.4%). Patent records list Daniel Francis Ryan in Brewster, MA, US.

Patents per Year

Patents granted per year, 1981 to 2018Bar chart with a peak of 4 patents in 1998.peak 41981: 1 patents19811982: 1 patents1986: 1 patents19861989: 1 patents1994: 2 patents19941995: 1 patents1996: 1 patents19961998: 4 patents1999: 2 patents19992000: 3 patents2001: 4 patents20012002: 2 patents2003: 2 patents20032004: 4 patents2005: 1 patents20052012: 1 patents2014: 1 patents20142017: 1 patents2018: 1 patents2018

Issued Patents All Time

Showing 1–25 of 34 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9926496 Process and apparatus employing microchannel process technology Anna Lee Tonkovich, Ravi Arora, John H. Brophy, Francis P. Daly, Soumitra Deshmukh +14 more 2018-03-27
9695368 Process and apparatus employing microchannel process technology Anna Lee Tonkovich, Ravi Arora, John H. Brophy, Francis P. Daly, Soumitra Deshmukh +14 more 2017-07-04
8747656 Process and apparatus employing microchannel process technology Anna Lee Tonkovich, Ravi Arora, John H. Brophy, Francis P. Daly, Soumitra Deshmukh +14 more 2014-06-10
8100996 Process for upgrading a carbonaceous material using microchannel process technology Wayne W. Simmons, Robert Dwayne Litt, Anna Lee Tonkovich, Laura J. Silva, Bruce E. Stangeland +2 more 2012-01-24
6846848 Production of high purity fisher-tropsch wax Robert J. Wittenbrink, Loren Ansell, Louis F. Burns 2005-01-25 $106,404,000
6833064 Wide cut Fischer Tropsch diesel fuels Paul J. Berlowitz, Robert J. Wittenbrink, William Berlin Genetti, Jack W. Johnson 2004-12-21 $529,688,000
6787022 Winter diesel fuel production from a fischer-tropsch wax Paul J. Berlowitz, Robert J. Wittenbrink, W. Genetti, Jack W. Johnson 2004-09-07 $123,027,000
6776898 Process for softening fischer-tropsch wax with mild hydrotreating Robert J. Wittenbrink 2004-08-17 $110,079,000
6695965 Process for adjusting the hardness of Fischer-Tropsch wax by blending Robert J. Wittenbrink 2004-02-24 $288,980,000
6663767 Low sulfur, low emission blends of fischer-tropsch and conventional diesel fuels Paul J. Berlowitz, Robert J. Wittenbrink, Jack W. Johnson, John Richard Bateman 2003-12-16 $185,219,000
6506297 Biodegradable high performance hydrocarbon base oils Robert J. Wittenbrink, Richard F. Bauman 2003-01-14 $157,662,000
6455474 High performance environmentally friendly, low temperature, drilling fluids Robert J. Wittenbrink, Charles J. Mart, Bruce R. Cook 2002-09-24 $115,168,000
6375830 Isoparaffinic base stocks by dewaxing fischer-tropsch wax hydroisomerate over Pt/H-mordenite Janet Renee Clark, Robert J. Wittenbrink, Albert E. Schweizer 2002-04-23 $87,241,000
6332974 Wide-cut synthetic isoparaffinic lubricating oils Robert J. Wittenbrink, Paul J. Berlowitz, Jacob J. Habeeb 2001-12-25
6294076 Fischer-Tropsch wax and hydrocarbon mixtures for transport (law938) W. Genetti, L. L. Ansell, Paul J. Berlowitz 2001-09-25 $173,924,000
6294587 Water emulsions of Fischer-Tropsch liquids (LAW516) Robert J. Wittenbrink, Paul J. Berlowitz, Tapan Chakrabaty, Loren Ansell 2001-09-25 $173,924,000
6179994 Isoparaffinic base stocks by dewaxing fischer-tropsch wax hydroisomerate over Pt/H-mordenite Janet Renee Clark, Robert J. Wittenbrink, Albert E. Schweizer 2001-01-30 $483,593,000
6103099 Production of synthetic lubricant and lubricant base stock without dewaxing Robert J. Wittenbrink, Douglas R. Boate 2000-08-15 $285,513,000
6096690 High performance environmentally friendly drilling fluids Robert J. Wittenbrink, Charles J. Mart, Bruce R. Cook 2000-08-01 $354,154,000
6096940 Biodegradable high performance hydrocarbon base oils Robert J. Wittenbrink, Richard F. Bauman 2000-08-01 $354,154,000
5906727 High purity paraffinic solvent compositions Robert J. Wittenbrink, Steven E. Silverberg 1999-05-25 $157,186,000
5866748 Hydroisomerization of a predominantly N-paraffin feed to produce high purity solvent compositions Robert J. Wittenbrink, Steven E. Silverberg 1999-02-02 $123,675,000
5833839 High purity paraffinic solvent compositions, and process for their manufacture Robert J. Wittenbrink, Steven E. Silverberg 1998-11-10 $365,764,000
5807413 Synthetic diesel fuel with reduced particulate matter emissions Robert J. Wittenbrink, Richard F. Bauman, Paul J. Berlowitz 1998-09-15 $86,308,000
5756420 Supported hydroconversion catalyst and process of preparation thereof Robert J. Wittenbrink, William C. Baird, Jr., Kenneth L. Riley, Jack W. Johnson 1998-05-26 $87,556,000