Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DS

David A. Simpson — 31 Patents

WTWaters Technologies: 8 patents #66 of 422Top 20%
DBDsm Ip Assets B.V.: 7 patents #149 of 2,011Top 8%
OSOsel: 4 patents #2 of 20Top 10%
ABApplied Biosystems: 3 patents #269 of 690Top 40%
HEHercules: 2 patents #231 of 725Top 35%
CICameron International: 1 patents #374 of 660Top 60%
BABp Corporation North America: 1 patents #351 of 812Top 45%
General Motors: 1 patents #9,441 of 18,328Top 55%
Boulder, CO: #167 of 5,018 inventorsTop 4%
Colorado: #1,005 of 40,980 inventorsTop 3%
Overall (All Time): #115,823 of 4,157,543Top 3%
31 Patents All Time
David A. Simpson has been granted 31 US patents while listed as an inventor at Waters Technologies. The first was granted in 1981 and the most recent in January 2025. David A. Simpson ranks #115,823 of 4,157,543 US inventors in our database (top 2.8%). Patent records list David A. Simpson in Boulder, CO, US.

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12203075 Polyunsaturated fatty acid synthase nucleic acid molecules and polypeptides, compositions, and methods of making and uses thereof Kirk E. Apt, Leslie Richter, Ross Zirkle 2025-01-21
12121891 Dual delivery needle wash system Rose Solow, Colin Fredette, Marc E. Lemelin, Joshua A. Burnett 2024-10-22 $58,667,000
11913916 Needle drive, system and method Joshua A. Burnett, Rose Solow, Marc E. Lemelin 2024-02-27 $63,412,000
11879875 Sample manager, system and method Joshua A. Burnett, Rose Solow, Marc E. Lemelin 2024-01-23 $109,857,000
11835496 Sample metering and injection for liquid chromatography Joshua A. Burnett, Rose Solow 2023-12-05 $56,066,000
11774415 Metering pump for liquid chromatography Joshua A. Burnett, Rose Solow, Peter U. Osswald, John M. Auclair, Michael LeBeau 2023-10-03 $45,710,000
11555804 Liquid chromatography thermal system with thermal status detection Cameron Chaput, Miguel Soares 2023-01-17 $42,200,000
11162923 Twist lock compliant needle for detection of contact Joshua A. Burnett, John M. Auclair 2021-11-02 $24,342,000
11002713 Sample organizer, tray, system and method Joshua A. Burnett, Marc E. Lemelin, Paul Keenan, Peter U. Osswald 2021-05-11 $126,255,000
10829794 Protein production in microorganisms of the phylum labyrinthulomycota Kirk E. Apt, James Casey Lippmeier, Jun Wang, James P. Wynn, Ross Zirkle 2020-11-10
10689959 Fluid injection system 2020-06-23
10538772 Polyunsaturated fatty acid synthase nucleic acid molecules and polypeptides, compositions, and methods of making and uses thereof Kirk E. Apt, Leslie Richter, Ross Zirkle 2020-01-21
10392988 Pressure relief system for diesel exhaust fluid freeze damage mitigation 2019-08-27 $10,097,000
9540666 Polyunsaturated fatty acid synthase nucleic acid molecules and polypeptides, compositions, and methods of making and uses thereof Kirk E. Apt, Leslie Richter, Ross Zirkle 2017-01-10
9518102 Polypeptide for improving protein production in microorganisms of the phylum Labyrinthulomycota Kirk E. Apt, James Casey Lippmeier, Jun Wang, James P. Wynn, Ross Zirkle 2016-12-13
9267130 Polypeptides having nucleic acid binding activity and compositions and methods for nucleic acid amplification Patrick K. Martin, Christine D. Hardy 2016-02-23
9212352 Polypeptides having nucleic acid binding activity Patrick K. Martin 2015-12-15
9012616 Polynucleotide for improving protein production in microorganisms of the phylum labyrinthulomycota Kirk E. Apt, James Casey Lippmeier, Jun Wang, James P. Wynn, Ross Zirkle 2015-04-21
8940884 Polyunsaturated fatty acid synthase nucleic acid molecules and polypeptides, compositions, and methods of making and uses thereof Kirk E. Apt, Leslie Richter, Ross Zirkle 2015-01-27
8637651 Protein production in microorganisms of the phylum labyrinthulomycota Kirk E. Apt, James Casey Lippmeier, Jun Wang, James P. Wynn, Ross Zirkle 2014-01-28
8597402 Device for capturing gas from a produced water stream 2013-12-03
8458598 Customized advertising for online slideshow Thomas Hakel, Paul Vilevac 2013-06-04
8439999 Device for capturing gas from a produced water stream 2013-05-14
8349600 Polypeptides having nucleic acid binding activity Patrick K. Martin 2013-01-08
8302695 Downhole systems and methods for deliquifaction of a wellbore Michael Scull 2012-11-06