HL

H. Franklin Lawson

AR Atlantic Richfield: 2 patents #271 of 1,061Top 30%
AC Arco Chemical: 1 patents #16 of 42Top 40%
📍 Downingtown, PA: #176 of 472 inventorsTop 40%
🗺 Pennsylvania: #23,606 of 74,527 inventorsTop 35%
Overall (All Time): #1,669,438 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4797450 Additives for water-base drilling fluid and process David C. Dehm 1989-01-10
4644035 Process for sulfonating of polymers containing dicarboxylic acid cyclic imide units David C. Dehm 1987-02-17
4618655 Process for preparation of polymers containing dicarboxylic acid cyclic imide units in a solid/liquid slurry David C. Dehm 1986-10-21