Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11225776 | Boom potential energy recovery of hydraulic excavator | James Howland, Hao Zhang, Blake Carl | 2022-01-18 |
| 10941542 | Boom potential energy recovery of hydraulic excavator | James Howland, Hao Zhang, Blake Carl | 2021-03-09 |
| 10815646 | Boom potential energy recovery of hydraulic excavator | James Howland, Hao Zhang, Blake Carl | 2020-10-27 |
| 10819252 | Adaptive hybrid wireless power generation using piezoelectric element and power beaming in hydraulic systems | Jeff Cullman, Hao Zhang, James Howland, Zhesheng Jiang | 2020-10-27 |
| 10358797 | Boom potential energy recovery of hydraulic excavator | James Howland, Hao Zhang, Blake Carl | 2019-07-23 |
| 9879403 | Hydraulic hybrid swing drive system for excavators | James Howland, Hao Zhang | 2018-01-30 |