Mark Dunbar has been granted 6 US patents while listed as an inventor at Sunstone . The first was granted in 2000 and the most recent in August 2019. Mark Dunbar ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Mark Dunbar in Tulsa, OK, US.
Patents per Year Patents granted per year, 2000 to 2019 Bar chart with a peak of 1 patents in 2000. peak 1 2000: 1 patents 2000 2004: 1 patents 2004 2008: 1 patents 2008 2011: 1 patents 2011 2016: 1 patents 2016 2019: 1 patents 2019
Issued Patents All Time
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Showing 1–6 of 6 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
10370910 Brake, shear and cable management system and method Frank Fetters, III 2019-08-06
9376294 Brake, shear and cable management system and method Frank Fetters, III 2016-06-28
7981379 Producing nitrogen to use in under balanced drilling, secondary recovery production operations and pipeline maintenance William James Hughes 2011-07-19
$7,210,000
7468173 Method for producing nitrogen to use in under balanced drilling, secondary recovery production operations and pipeline maintenance William James Hughes 2008-12-23
$5,488,000
6745842 Concentric casing jack William James Hughes 2004-06-08
6089223 Direct contact water heating system Robert Jasper , Bill O. Rollings 2000-07-18
$294,000