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

Mark E. Kertok — 6 Patents

Chevron: 3 patents #1,355 of 4,788Top 30%
PPPhillips Petroleum: 2 patents #1,121 of 2,260Top 50%
Bartlesville, OK: #317 of 1,143 inventorsTop 30%
Oklahoma: #1,811 of 12,736 inventorsTop 15%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Mark E. Kertok has been granted 6 US patents while listed as an inventor at Chevron. The first was granted in 1985 and the most recent in August 2009. Mark E. Kertok ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Mark E. Kertok in Bartlesville, OK, US.

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7572875 Ethylene homopolymers or copolymers having good machine direction (MD) elmendorf tear strength Michael D. Jensen, Joel L. Martin, Max P. McDaniel, Qing Yang, Matthew G. Thorn +4 more 2009-08-11
7312283 Polymerization catalysts and process for producing bimodal polymers in a single reactor Joel L. Martin, Matthew G. Thorn, Max P. McDaniel, Michael D. Jensen, Qing Yang +1 more 2007-12-25
7199073 Resins that yield low haze films and the process for their production Joel L. Martin, Elizabeth A. Benham, Michael D. Jensen, Max P. McDaniel, Gil R. Hawley +3 more 2007-04-03
7119153 Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf tear strength Michael D. Jensen, Joel L. Martin, Max P. McDaniel, Qing Yang, Matthew G. Thorn +4 more 2006-10-10
4623521 Carbon black reactor Mark L. Gravley 1986-11-18 $6,778,000
4502858 Mixing apparatus 1985-03-05 $7,084,000