Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
WA

William M. Andre — 9 Patents

HYHydra-Lock: 8 patents #1 of 9Top 15%
Rochester Hills, MI: #234 of 1,754 inventorsTop 15%
Michigan: #10,673 of 86,293 inventorsTop 15%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
William M. Andre has been granted 9 US patents while listed as an inventor at Hydra-Lock. The first was granted in 1999 and the most recent in February 2015. William M. Andre ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list William M. Andre in Rochester Hills, MI, US.

Patents per Year

Patents granted per year, 1999 to 2015Bar chart with a peak of 4 patents in 2008.peak 41999: 1 patents19992000: 1 patents20002008: 4 patents20082011: 1 patents20112013: 1 patents20132015: 1 patents2015

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
8944438 Fluid-actuated workholder with a collet driven by a soft and thin bladder 2015-02-03
8585061 Hydrostatically actuated workholding apparatus with high expansion and recovery sleeve 2013-11-19
7967300 Hydrostatically actuated workholding apparatus with high expansion and recovery sleeve 2011-06-28
7469907 Mechanically actuated workpiece holder including a plastic collet Robert Laube 2008-12-30
7374178 Workpiece holder Bruce W. Irwin, Sr. 2008-05-20
7331583 Workpiece holder with a multi-piece bladder 2008-02-19
7316403 Hydrostatic workpiece holder with a removable cartridge assembly Bruce W. Irwin, Sr. 2008-01-08
6015154 Large displacement hydrostatic workpiece holder Bruce W. Irwin, Sr. 2000-01-18
6000687 Actuator for hydraulic tool holder 1999-12-14