Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Herbert E. Leistner — 10 Patents

SMSigma Tool & Machine: 6 patents #1 of 10Top 10%
Toronto, CA: #749 of 9,482 inventorsTop 8%
Overall (All Time): #525,285 of 4,157,543Top 15%
10 Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
6317970 Clip crimping tool Carlo Stagnoli 2001-11-20
6305888 T-nut with indented leading and trailing edge flanges 2001-10-23
6183181 Sealed end tee-nut Carlo Stagnoli 2001-02-06
6129493 Tee-nut with globular shaped sleeve Paul D. Green, Richard Pfeiffer 2000-10-10
5482419 Nail with offset reinforced head 1996-01-09
4913611 Nailing strip 1990-04-03
4679975 Nail strip with covered wire attaching means 1987-07-14
4508478 Tee nut fastener member 1985-04-02
4442965 Nail feed mechanism 1984-04-17
4433782 Magazine assembly for coil nails Siegfried Figge 1984-02-28