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

David Wade Campbell — 13 Patents

COConoco: 2 patents #177 of 638Top 30%
SLSilcom Research Limited: 1 patents #3 of 5Top 60%
UTUnion Carbide Chemicals & Plastics Technology: 1 patents #401 of 701Top 60%
RTX (Raytheon): 1 patents #8,290 of 15,912Top 55%
Bethel Park, PA: #17 of 258 inventorsTop 7%
Pennsylvania: #6,020 of 74,527 inventorsTop 9%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
David Wade Campbell has been granted 13 US patents while listed as an inventor at Conoco. The first was granted in 1987 and the most recent in June 2024. David Wade Campbell ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list David Wade Campbell in Bethel Park, PA, US.

Patents per Year

Patents granted per year, 1987 to 2024Bar chart with a peak of 3 patents in 2000.peak 31987: 2 patents19871993: 1 patents19931994: 1 patents19941995: 1 patents19952000: 3 patents20002007: 1 patents20072023: 3 patents20232024: 1 patents2024

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12006239 Oxygen infusion module for wastewater treatment Mark Max MacKenzie 2024-06-11
11795081 Systems of gas infusion for wastewater treatment Mark Max MacKenzie 2023-10-24
11697606 Systems of gas infusion for wastewater treatment Mark Max MacKenzie 2023-07-11
11643344 Methods of gas infusion for wastewater treatment Mark Max MacKenzie 2023-05-09
7289853 High frequency wireless pacemaker Michael Lugo 2007-10-30
6119573 Carbon fiber flocking for thermal management of compact missile electronics Thomas John Berens, Peter J. Drake, Timothy Knowles, Timothy B. Mellor 2000-09-19
6095241 Coupling device for a drive assembly Linden H. Bland 2000-08-01
6026898 Integral tubing head and rotator Linden H. Bland 2000-02-22
5391656 Recovery of unreacted monomers in an olefin polymerization process Randall L. Force, Kelli L. Campbell 1995-02-21 $15,005,000
D348462 Pager 1994-07-05
5206979 Roller for specialty paint finishes 1993-05-04
4693826 Overflow for slurry tank Jeffrey L. Beck 1987-09-15
4676810 Revolving separator Ahmed A. El-Saie 1987-06-30