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

Barbara Ester

MAMannesmann Sachs Ag: 3 patents #67 of 301Top 25%
ZAZf Sachs Ag: 1 patents #81 of 172Top 50%
Schweinfurt, DE: #134 of 509 inventorsTop 30%
Overall (All Time): #1,256,974 of 4,157,543Top 35%
4 Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6986289 Torque-detecting arrangement or wear detecting arrangement for a friction clutch Thomas Otto 2006-01-17
6540057 Actuation device for a friction clutch Andreas Konrad, Thomas Otto, Herbert Voit, Manfred Wehner 2003-04-01
6234290 Actuating installation for pneumatic clutch actuation with overload protection and/or incorrect-operation protection Hans-Jurgen Drexl, Frank Hirschmann, Jurgen Liebler, Joachim Lindner, Thomas Otto +2 more 2001-05-22
6050382 Clutch disk for a motor vehicle friction clutch Helmuth Weissenberger, Achim Link 2000-04-18