Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9086081 | Hydraulic control system having swing motor recovery | Pengfei Ma, Tonglin Shang, Rustu Cesur, Bryan J. Hillman, Peter Spring +3 more | 2015-07-21 |
| 9068575 | Hydraulic control system having swing motor energy recovery | Tonglin Shang, Peter Spring, Pengfei Ma, Randal N. Peterson, Rustu Cesur | 2015-06-30 |
| 8997479 | Hydraulic control system having energy recovery | Gang Wen, Pengfei Ma, Tonglin Shang | 2015-04-07 |
| 8919113 | Hydraulic control system having energy recovery kit | Pengfei Ma, Tonglin Shang, Peter Spring, Dayao Chen, Salik Abdul Syed +2 more | 2014-12-30 |
| 8850806 | Hydraulic control system having swing motor energy recovery | Tonglin Shang, Peter Spring, Pengfei Ma, Randal N. Peterson | 2014-10-07 |
| 8776511 | Energy recovery system having accumulator and variable relief | Dayao Chen, Pengfei Ma, Tonglin Shang, Lawrence J. Tognetti, Jeffrey L. Kuehn | 2014-07-15 |
| 8756930 | Hydraulic system having implement and steering flow sharing | Bryan A. Johnson, Jason L. Brinkman, Lawrence J. Tognetti, Chris R. Cesur, Peter Spring | 2014-06-24 |
| 8726645 | Hydraulic control system having energy recovery | Tonglin Shang, Pengfel Ma | 2014-05-20 |
| 8336232 | Multi-function wheel loader linkage control with optimized power management | Kalpesh Patel, Aleksandar Egelja | 2012-12-25 |
| 7997117 | Electrically controlled hydraulic valve calibration method and system | Benjamin Yoo, Aleksandar Egelja, Tonglin Shang, Matthew J. Beschorner | 2011-08-16 |
| 7908852 | Control system for recovering swing motor kinetic energy | Pengfei Ma, Michael Schwab, Tonglin Shang, Kalpesh Patel | 2011-03-22 |
| D609710 | Front bezel for computer enclosure | Chun-Chi Liang, Jiing-Renn Yu, Yun-Dong Xu, Peng Zhou | 2010-02-09 |
| D576628 | Front bezel for computer enclosure | Chun-Chi Liang, Jiing-Renn Yu, Peng Zhou, Chang-Sheng Zhou, Meng Zhang | 2008-09-09 |
| 7302797 | Hydraulic system having a post-pressure compensator | Pengfei Ma, Michael Schwab | 2007-12-04 |
| 7269944 | Hydraulic system for recovering potential energy | Pengfei Ma, Michael Schwab, Kalpesh Patel, Tonglin Shang | 2007-09-18 |
| 7251935 | Independent metering valve control system and method | Pengfei Ma, Aleksandar Egelja, Michael T. Verkuilen | 2007-08-07 |
| 7243493 | Valve gradually communicating a pressure signal | Pengfei Ma, Jeff Kuehn, Kalpesh Patel | 2007-07-17 |
| 7204185 | Hydraulic system having a pressure compensator | Pengfei Ma, Gene R. St. Germain, Aleksandar Egelja, Robert Scot Lehmann, Michael A. Sorokine | 2007-04-17 |
| 7204084 | Hydraulic system having a pressure compensator | Pengfei Ma | 2007-04-17 |
| 6609369 | System and method of pressure compensation for electro hydraulic control systems | Douglas W. Koehler, Michael Schwab | 2003-08-26 |