Todd R. Steffens has been granted 14 US patents while listed as an inventor at ExxonMobil . The first was granted in 1992 and the most recent in March 2010. Todd R. Steffens ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Todd R. Steffens in Mine Hill, NJ, US.
Patents per Year Patents granted per year, 1992 to 2010 Bar chart with a peak of 3 patents in 2003. peak 3 1992: 1 patents 1992 1994: 2 patents 1994 1995: 1 patents 1995 2000: 1 patents 2000 2002: 1 patents 2002 2003: 3 patents 2003 2008: 3 patents 2008 2009: 1 patents 2009 2010: 1 patents 2010
Issued Patents All Time
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Showing 1–14 of 14 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
7670478 FCC feed injection system George A. Swan, III , Rustom M. Billimoria , Rathna P. Davuluri , Steven S. Lowenthal , Christopher G. Smalley 2010-03-02
$120,678,000
7594993 FCC feed injection zone Dean Draemel 2009-09-29
$323,855,000
7452838 Controlling temperature in catalyst regenerators Brian A. Cunningham , James H. Beech, Jr. , Richard E. Walter 2008-11-18
$565,761,000
7407572 Feed injector Thomas Hewitt , Rathna P. Davuluri , Enrique Feliz 2008-08-05
$309,947,000
7374660 Process for selectively producing C3 olefins in a fluid catalytic cracking process with recycle of a C4 fraction to a secondary reaction zone separate from a dense bed stripping zone Brian Erik Henry , Jacob Johannes Thiart , Nicole J. Lai , James D. Dearth 2008-05-20
$397,166,000
6610255 Vanadium removal in FCC by use of an outboard vessel Guang Cao , Gordon F. Stuntz , Daniel P. Leta , William R Adamson , Albert Hu 2003-08-26
$215,322,000
6602403 Process for selectively producing high octane naphtha Paul K. Ladwig 2003-08-05
$278,405,000
6558531 Method for maintaining heat balance in a fluidized bed catalytic cracking unit Paul K. Ladwig , George Melfi , John E. Asplin 2003-05-06
$207,377,000
6455750 Process for selectively producing light olefins Paul K. Ladwig 2002-09-24
$115,168,000
6114265 Combustion control in a fluid catalytic cracking regenerator Paul K. Ladwig 2000-09-05
$379,410,000
5389231 Catalytic cracking process and apparatus therefor John F. R. Brander 1995-02-14
$59,835,000
5348642 Catalytic cracking process with circulation of hot, regenerated catalyst to the stripping zone Willibald Serrand , Philip Holmes , Patrick Terry , Paul E. Eberly, Jr. 1994-09-20
$32,722,000
5320744 Positive evacuation of FCCU reactor dilute phase volume — 1994-06-14
$22,702,000
5173175 FCC feed injector Stephen D. Challis 1992-12-22
$68,250,000
