Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12331633 | High voltage protection and receiver saturation prevention apparatus with high voltage peeking functions for downhole logging | Ziyang LI | 2025-06-17 |
| 12027984 | Switching power supply converter | Liang Yan | 2024-07-02 |
| 11927712 | Downhole ultrasound image correction in oil based mud | Yu Weng, Chung Chang, Richard Timothy Coates, Rodney Allen Marlow, Xiang Wu +2 more | 2024-03-12 |
| 11865067 | Transcutaneous electrical stimulation and light stimulation devices for treating hypertension using electrical or light energy applied to predefined acupuncture points | Shaista Malik, Stephanie C Tjen-A-Looi, Lifang Xie, Liang Fu | 2024-01-09 |
| 11771493 | Treatment apparatus for endoscope, endoscope, and expandable frame | Baiming SHI | 2023-10-03 |
| 11662159 | Device for assembling and processing plate heat exchanger of power battery | Shusheng Xiong, Qiujie Song, Wei Li, Jun Ye, You-Chen WENG | 2023-05-30 |
| 11578592 | Robust logging-while-drilling sonic transmitters with improved strength and bandwidth | Chung Chang, Michael Shaun Spencer, Jing Jin, Jose Sanchez, Haoshi Song | 2023-02-14 |
| 11519255 | Downhole tool dynamic and motion measurement with multiple ultrasound transducer | Yu Weng, Chung Chang, Rodney Allen Marlow, Boguslaw Wiecek | 2022-12-06 |
| 11415720 | Downhole ultrasound image correction in oil based mud | Yu Weng, Chung Chang, Richard Timothy Coates, Rodney Allen Marlow, Xiang Wu +2 more | 2022-08-16 |
| 11259989 | Methods and systems for treating hypertension using energy-stimulated acupuncture applied to predefined acupuncture points | Shaista Malik, Stephanie C Tjen-A-Looi, Lifang Xie, Liang Fu | 2022-03-01 |
| 11163083 | Echo detection and measurement in noisy environment for downhole logging | — | 2021-11-02 |
| 11149543 | Digital baseband communication on power line downhole | Wei Sun, Xiang Tian | 2021-10-19 |
| 11140008 | Noise compensation for communication on power line downhole | — | 2021-10-05 |
| 10992144 | Battery balancing and current control with bypass circuit for load switch | Liang Yan, Bradley M. Lehman | 2021-04-27 |
| 10947838 | Echo velocity measurements without using recessed ultrasonic transceiver | Chung Chang, Yu Weng, Ziyang LI, Rodney Allen Marlow | 2021-03-16 |
| 10927669 | Transducer ringing | Richard Timothy Coates | 2021-02-23 |
| 10808526 | Transmitter and receiver interface for downhole logging | Ziyang LI | 2020-10-20 |
| 10482908 | Performance monitoring of a near-field transducer of a heat-assisted magnetic recording slider | Riyan Alex Mendonsa, Jon D. Trantham, James Dillon Kiely, Joshua Ward Christensen | 2019-11-19 |
| 10379246 | Dynamic gain system with azimuthal averaging for downhole logging tools | Joni Polili Lie, Batakrishna Mandal | 2019-08-13 |
| 10273797 | Casing and cement evaluation tool with reduced transmitter ringing | Zheng Chen, Batakrishna Mandal | 2019-04-30 |
| 10156135 | Phase compensated fixed-point numerically controlled oscillator for downhole logging | William J. Schaecher | 2018-12-18 |
| 10147454 | Heat-assisted magnetic recording device capable of detecting degradation of NFT by measuring back-heat from medium | Riyan Alex Mendonsa, Jon D. Trantham, James Dillon Kiely, Joshua Ward Christensen | 2018-12-04 |
| 9869173 | Pulse generation for downhole logging | Batakrishna Mandal, Boguslaw Wiecek, Zheng Chen | 2018-01-16 |
| 9657562 | Methods and systems for downhole temperature logging | Lianhe Guo, Wesley N. Ludwing | 2017-05-23 |
| 8830647 | Fault current limiter | Song Chen, Bradley M. Lehman, Gianfranco DE PALMA | 2014-09-09 |