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

Abraham Lipschitz

ESEg&G Sealol: 4 patents #2 of 26Top 8%
Nahariah, RI: #1 of 1 inventorsTop 100%
Overall (All Time): #1,060,267 of 4,157,543Top 30%
5 Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5143384 Bi-directional, non-contact face seal 1992-09-01
5133562 Drained face seal 1992-07-28
5052694 Hydrostatic face seal and bearing 1991-10-01
4972986 Circumferential inter-seal for sealing between relatively rotatable concentric shafts 1990-11-27
4421321 Hydrodynamic non-contacting seal for rotary machines 1983-12-20