For the Inventor, By the Inventor

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Mt. Clemens, MI, United States of America

Hydra-lock Corporation

USPTO Granted Patents = 16

CIPO Patents = 3

Trademarks = 6

Forward Citations = 158

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9 inventors (with patents filed for the assignee):

William M Andre (8 out of 9 patents)

Robert Laube (5 out of 5 patents)

John V Bartolone (2 out of 2 patents)

4. Bruce W Irwin, Sr (2 out of 3 patents)

5. Eugene R Andre, Sr (2 out of 3 patents)

6. Dan J O'Lear (1 out of 1 patent)

7. Raymond Smith (1 out of 21 patents)

8. Richard A Dietz (1 out of 1 patent)

9. John P Schmeisl (1 out of 1 patent)

16 patents: Sort by Forward Citations

1. 11534839 - Hydrostatically actuated workholding apparatus (2022-12-27),

2. 8944438 - Fluid-actuated workholder with a collet driven by a soft and thin bladder (2015-02-03),

3. 8800997 - Stepped collet (2014-08-12),

4. 8585061 - Hydrostatically actuated workholding apparatus with high expansion and recovery sleeve (2013-11-19),

5. 7967300 - Hydrostatically actuated workholding apparatus with high expansion and recovery sleeve (2011-06-28),

6. 7469907 - Mechanically actuated workpiece holder including a plastic collet (2008-12-30),

7. 7374178 - Workpiece holder (2008-05-20),

8. 7331583 - Workpiece holder with a multi-piece bladder (2008-02-19),

9. 7147232 - Workpiece holder (2006-12-12),

10. 6077003 - Tool holder (2000-06-20),

11. 6015154 - Large displacement hydrostatic workpiece holder (2000-01-18),

12. 6000687 - Actuator for hydraulic tool holder (1999-12-14),

13. 5944325 - Mechanically actuated hydrostatic tool holder (1999-08-31),

14. 5516243 - Reamer chuck and tool expander (1996-05-14),

15. 5286042 - Tool holder with centering adjustment (1994-02-15),

Hydra-lock Corporation is a leading provider of hydraulic and pneumatic sealing solutions for a wide range of industries. With over 50 years of experience, we offer a comprehensive line of products including seals, gaskets, O-rings, and custom-engineered solutions. Our innovative products are designed to withstand extreme pressures and temperatures, ensuring reliable performance in even the most demanding environments.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

16 Patents

#1 in Mt. Clemens, MI

#696 in Michigan

#19,271 in US

#36,634 in the World

Mt. Clemens, MI, United States of America

Hydra-lock Corporation

Forward Citations = 158

9 inventors:

William M Andre (8 out of 9 patents)

Robert Laube (5 out of 5 patents)

John V Bartolone (2 out of 2 patents)

4. Bruce W Irwin, Sr (2 out of 3 patents)

5. Eugene R Andre, Sr (2 out of 3 patents)

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