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

David R. Chang — 2 Patents

GE: 2 patents #13,562 of 36,430Top 40%
Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,216,740 of 4,157,543Top 55%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6428740 Method of removing cores from ceramic matrix composite articles Thomas J. Dunyak, James Dale Steibel, Peggy E. Jones 2002-08-06
6274078 Method of removing cores from ceramic matrix composite articles Thomas J. Dunyak, James Dale Steibel, Peggy E. Jones 2001-08-14