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

Donald C. Roller — 3 Patents

IBM: 3 patents #26,272 of 70,183Top 40%
Boulder, CO: #1,858 of 5,018 inventorsTop 40%
Colorado: #13,156 of 40,980 inventorsTop 35%
Overall (All Time): #1,681,383 of 4,157,543Top 45%
3 Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4438917 Dual motor aligner Donovan M. Janssen, John Paul Mantey, Lance A. Walker 1984-03-27
4382592 Apparatus for collating sheets into sets and finishing thereof Steven R. Harding, Richard A. Lamos 1983-05-10
4325544 Collator with adjustable sheet aligner Robert Magno, Allan J. Rood 1982-04-20