Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Bruce K. Libby — 2 Patents

EPEpion: 2 patents #10 of 28Top 40%
Groveland, MA: #30 of 77 inventorsTop 40%
Massachusetts: #42,563 of 88,656 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Bruce K. Libby has been granted 2 US patents while listed as an inventor at Epion. The first was granted in 2002 and the most recent in November 2003. Bruce K. Libby ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Bruce K. Libby in Groveland, MA, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6646277 Charging control and dosimetry system for gas cluster ion beam Michael E. Mack 2003-11-11
6486478 Gas cluster ion beam smoother apparatus Isao Yamada, James A. Greer, Lester G. Crawford, James G. Bachand, Matthew C. Gwinn +1 more 2002-11-26