RH

Rolfe J. Hartley

EA Ethyl Petroleum Additives: 3 patents #1 of 16Top 7%
ET Ethyl: 1 patents #20 of 85Top 25%
📍 Lemay, MO: #1 of 1 inventorsTop 100%
🗺 Missouri: #17 of 1,010 inventorsTop 2%
Overall (1994): #4,722 of 165,921Top 3%
4
Patents 1994

Issued Patents 1994

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5372735 Automatic transmission fluids and additives therefor Hiroko Ohtani 1994-12-13
5360562 Ashless or low-ash synthetic base compositions and additives therefor Douglas R. Chrisope 1994-11-01
5358650 Gear oil compositions Sanjay Srinivasan 1994-10-25
5344579 Friction modifier compositions and their use Hiroko Ohtani 1994-09-06