Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9157542 | Fluid-biased hydraulic control valve | Robert D. Keller | 2015-10-13 |
| 8656873 | Oil control valve assembly for engine cam switching | Robert D. Keller, Robert Boychuk, Leo Joseph Buresh, III | 2014-02-25 |
| 8534182 | Valvetrain oil control system and oil control valve | Robert D. Keller, Robert A. Dayton | 2013-09-17 |
| 8443839 | Fluid-biased hydraulic control valve with armature piston | Robert D. Keller | 2013-05-21 |
| 8327750 | Valvetrain oil control system and oil control valve | Robert D. Keller, Robert A. Dayton | 2012-12-11 |
| 8316888 | Fluid-biased hydraulic control valve | Robert D. Keller | 2012-11-27 |
| 8302570 | Oil control valve assembly for engine cam switching | Robert D. Keller, Robert Boychuk, Leo Joseph Buresh, III | 2012-11-06 |
| 8230729 | Fluid condition and level sensor | Robert D. Keller | 2012-07-31 |
| 8199021 | Fluid level detection system | Robert D. Keller, William G. Spurrier, III, Jeffrey B. Smith, Mark L. Dell'Eva | 2012-06-12 |
| 7921703 | Integrated oil condition and level sensor | Robert D. Keller | 2011-04-12 |
| 6742537 | Combination solenoid operated flow control and shut-off valve with pressure transducer | Charles R. Martus, Janet Hawkins | 2004-06-01 |
| 6637261 | System and method for determining leakage in fuel vapor emission controls | — | 2003-10-28 |
| 6412335 | Low current solenoid valve | Charles A. Detweiler, Daniel L. DeLand, David R. Sosnowski | 2002-07-02 |
| 6119661 | Pressure compensating vapor management valve | Daniel L. DeLand, Charles A. Detweiler | 2000-09-19 |
| 5967183 | Controlling vapor flow in a conduit | Charles A. Detweiler, Daniel L. DeLand, Barbara J. Erickson | 1999-10-19 |
| 5941218 | Welded construction for fuel vapor purge regulator valve assembly | Daniel L. DeLand, Charles A. Detweiler | 1999-08-24 |
| 5921261 | Dampening resonance in a flow regulator | Barbara J. Erickson, Charles A. Detweiler, Daniel L. DeLand | 1999-07-13 |
| 5893354 | Method of controlling fuel vapor canister purge flow and vapor management valve therefor | Charles A. Detweiler, Daniel L. DeLand | 1999-04-13 |
| 5853018 | Dampening resonance in a flow regulator | Daniel L. DeLand, Barbara J. Erickson, Charles A. Detweiler | 1998-12-29 |
| 5749349 | Fuel vapor control system | Charles A. Detweiler, Daniel L. DeLand | 1998-05-12 |
| 5277167 | Vapor management valve | Daniel L. DeLand, Charles A. Detweiler | 1994-01-11 |
| 4971370 | Self-releasing deck lid latch | Charles A. Detweiler, Charles R. Martus, Peter Henning | 1990-11-20 |