Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
LH

Leland A. Hardcastle

PGPoco Graphite: 1 patents #1 of 3Top 35%
Decatur, TX: #1 of 4 inventorsTop 25%
Texas: #2,374 of 8,731 inventorsTop 30%
Overall (2004): #169,352 of 270,089Top 65%
1 Patents 2004

Issued Patents 2004

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6776936 Process for making porous graphite and articles produced therefrom Rex Gerald Sheppard, David F. Dingus 2004-08-17