Derek H. Willman has been granted 21 US patents. The first was granted in 2018 and the most recent in April 2020. Derek H. Willman ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Derek H. Willman in Bartlesville, OK, US.
Patents per Year Patents granted per year, 2018 to 2020 Bar chart with a peak of 14 patents in 2019. peak 14 2018: 5 patents 2018 2019: 14 patents 2019 2020: 2 patents 2020
Issued Patents All Time
Profile Widget
Showing 1–21 of 21 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
10619468 Processing of oil by steam addition Keith H. Lawson 2020-04-14
$166,489,000
10533404 Processing of oil by steam addition Keith H. Lawson 2020-01-14
$177,678,000
10386018 Processing of oil by steam addition Keith H. Lawson 2019-08-20
$211,573,000
10370948 Processing of oil by steam addition Keith H. Lawson 2019-08-06
$221,592,000
10329496 Processing of oil by steam addition Keith H. Lawson 2019-06-25
$108,546,000
10308882 Processing of oil by steam addition Keith H. Lawson 2019-06-04
$92,768,000
10294429 Processing of oil by steam addition Keith H. Lawson 2019-05-21
$183,270,000
10280374 Processing of oil by steam addition Keith H. Lawson 2019-05-07
$67,053,000
10280375 Processing of oil by steam addition Keith H. Lawson 2019-05-07
$67,053,000
10273418 Processing of oil by steam addition Keith H. Lawson 2019-04-30
$94,209,000
10260326 Processing of oil by steam addition Keith H. Lawson 2019-04-16
$106,968,000
10260008 Processing of oil by steam addition Keith H. Lawson 2019-04-16
$106,968,000
10215006 Processing of oil by steam addition Keith H. Lawson 2019-02-26
$73,535,000
10202832 Processing of oil by steam addition Keith H. Lawson 2019-02-12
$217,894,000
10190061 Processing of oil by steam addition Keith H. Lawson 2019-01-29
$219,101,000
10180052 Processing of oil by steam addition Keith H. Lawson 2019-01-15
$104,068,000
10125590 Processing of oil by steam addition Keith H. Lawson 2018-11-13
$198,688,000
10087732 Processing of oil by steam addition Keith H. Lawson 2018-10-02
$121,705,000
10082010 Processing of oil by steam addition Keith H. Lawson 2018-09-25
$105,652,000
10006277 Processing of oil by steam addition Keith H. Lawson 2018-06-26
$64,993,000
10006276 Processing of oil by steam addition Keith H. Lawson 2018-06-26
$64,993,000