Kenneth D. Nelson has been granted 36 US patents while listed as an inventor at Chevron . The first was granted in 1999 and the most recent in April 2025. Kenneth D. Nelson ranks #92,222 of 4,157,543 US inventors in our database (top 2.2%). Patent records list Kenneth D. Nelson in Napa, CA, US.
Patents per Year Patents granted per year, 1999 to 2025 Bar chart with a peak of 6 patents in 2011. peak 6 1999: 2 patents 1999 2003: 2 patents 2004: 1 patents 2004 2005: 3 patents 2007: 1 patents 2007 2008: 1 patents 2010: 1 patents 2010 2011: 6 patents 2012: 3 patents 2012 2013: 4 patents 2014: 3 patents 2014 2015: 4 patents 2016: 2 patents 2016 2019: 1 patents 2020: 1 patents 2020 2025: 1 patents 2025 Issued Patents All Time
Showing 26–36 of 36 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
7674863 Esterified copolymers of polyalkenes/unsaturated acidic reagents useful as lubricant and fuel additives — 2010-03-09
$96,077,000
7414013 Sulfurized polyisobutylene based wear and oxidation inhibitors Frank Plavac 2008-08-19
$501,292,000
7256242 Esterified copolymers of polyalkenes/unsaturated acidic reagents useful as lubricant and fuel additives — 2007-08-14
$388,156,000
6906011 Polymeric dispersants prepared from copolymers of low molecular weight polyisobutene and unsaturated acidic reagent James J. Harrison , William R. Ruhe, Jr. 2005-06-14
$266,407,000
6884855 Sulfurized polyisobutylene based wear and oxidation inhibitors Frank Plavac 2005-04-26
$415,279,000
6867171 Low molecular weight branched alkenyl succinic acid derivatives prepared from low molecular weight polyisobutene and unsaturated acidic reagents James J. Harrison 2005-03-15
6737387 Dispersed hydrated potassium borate compositions having improved properties in lubricating oil compositions James J. Harrison , Juan A. Buitrago 2004-05-18
$267,582,000
6632781 Lubricant composition comprising alkali metal borate dispersed in a polyalkylene succinic anhydride and a metal salt of a polyisobutenyl sulfonate James J. Harrison 2003-10-14
$79,189,000
6534450 Dispersed hydrated sodium borate compositions having improved properties in lubricating oil compositions James J. Harrison 2003-03-18
$342,844,000
5993497 Esters of polyalkyl or polyalkenyl N-hydroxyalkyl succinimides and fuel compositions containing the same Richard E. Cherpeck 1999-11-30
$106,130,000
5942014 Pyridyl and piperidyl esters of polyalklphenoxyalkanols and fuel compositions containing the same — 1999-08-24
$111,451,000
