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

John E. Corn — 3 Patents

AOAshland Oil: 3 patents #73 of 284Top 30%
Westerville, OH: #187 of 636 inventorsTop 30%
Ohio: #23,545 of 73,341 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
John E. Corn has been granted 3 US patents while listed as an inventor at Ashland Oil. The first was granted in 1981 and the most recent in March 1989. John E. Corn ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John E. Corn in Westerville, OH, US.

Patents per Year

Patents granted per year, 1981 to 1989Bar chart with a peak of 1 patents in 1981.peak 11981: 1 patents19811985: 1 patents19851989: 1 patents1989

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
4814379 Toughened, low permeability, solvent and salt resistant polyamide blends Paul W. Flood, Robert J. Schafer 1989-03-21 $3,696,000
4495110 Method of continuously forming an acid fluoride from carbon monoxide, anhydrous hydrogen fluoride and an olefin 1985-01-22 $2,169,000
4303594 Process for the production of isobutyric acid anhydride Richard V. Norton, Lee R. Zehner, Ralph F. Pascoe, Dace Grote 1981-12-01 $9,681,000