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

Mark Cullen — 10 Patents

JEJohnston Engineering: 2 patents #2 of 5Top 40%
Rossford, OH: #7 of 39 inventorsTop 20%
Ohio: #8,096 of 73,341 inventorsTop 15%
Overall (All Time): #481,000 of 4,157,543Top 15%
10 Patents All Time
Mark Cullen has been granted 10 US patents while listed as an inventor at Johnston Engineering. The first was granted in 1983 and the most recent in June 2021. Mark Cullen ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Mark Cullen in Rossford, OH, US.

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11046664 Method for extracting compositions from plants Anthony J. Durkacz 2021-06-29
10851077 Method for extracting compositions from plants Anthony J. Durkacz 2020-12-01
8926825 Process for removing sulfur from hydrocarbon streams using hydrotreatment, fractionation and oxidation 2015-01-06
8433587 Communication of medical prescriptions with mobile processing systems 2013-04-30
8409426 Treatment of crude oil fractions, fossil fuels, and products thereof 2013-04-02
7871512 Treatment of crude oil fractions, fossil fuels, and products thereof 2011-01-18
7081196 Treatment of crude oil fractions, fossil fuels, and products thereof with sonic energy 2006-07-25
5056615 Vehicle control system Anthony J. Duthie 1991-10-15 $475,000
5044887 Blower fan impellers Anthony J. Duthie 1991-09-03 $328,000
4404991 Valve control assembly 1983-09-20