Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12123262 | PDC cutter with enhanced performance and durability | Youhe Zhang, Ke Chen, Xiaoge Gan | 2024-10-22 |
| 11220868 | Split threads for fixing accessories to a body | Youhe Zhang, Huimin Song | 2022-01-11 |
| 10774594 | Rotating cutting structures and structures for retaining the same | Youhe Zhang, Chen Chen | 2020-09-15 |
| 10774596 | Rolling cutter stability | Youhe Zhang, Chen Chen, Balasubramanian Durairajan, Sandeep Tammineni | 2020-09-15 |
| 10737367 | Matrix tool bodies with erosion resistant and/or wear resistant matrix materials | Gregory T. Lockwood, Youhe Zhang | 2020-08-11 |
| 10450803 | Spline insert for a downhole tool | Manoj D. Mahajan, Timothy A. Burdett, James A. Barnhouse, Vincente S. Salvo, Kenneth D. Hora | 2019-10-22 |
| 10350733 | Ultra-hard material cutting elements and methods of manufacturing the same with a metal-rich intermediate layer | Liang Zhao, Xiaoge Gan, Yahua Bao, Youhe Zhang, J. Daniel Belnap +1 more | 2019-07-16 |
| 10267096 | Drill bit rolling element with retaining ring | Jibin Shi, Chen Chen, Youhe Zhang | 2019-04-23 |
| 10190367 | Spline insert for a downhole tool | James A. Barnhouse, Manoj D. Mahajan, Vincente S. Salvo, Timothy A. Burdett, Kenneth D. Hora | 2019-01-29 |
| 10119341 | Cutter with support liner | Youhe Zhang, Chen Chen, Jibin Shi | 2018-11-06 |
| 9988853 | Retention of multiple rolling cutters | Peter Thomas Cariveau, Yuelin Shen | 2018-06-05 |
| 9976356 | Rolling cutter with retaining ring | Jibin Shi, Chen Chen, Youhe Zhang | 2018-05-22 |
| 9890636 | Axially stable retention mechanism for picks and cutting elements | David R. Hall, Francis Leany, John J. Pierce, Youhe Zhang | 2018-02-13 |
| 9869133 | Method of using spring loaded blocker to retain rolling cutters or mechanical lock cutters | Chen Chen, Jibin Shi | 2018-01-16 |
| 9739097 | Polycrystalline diamond compact cutters with conic shaped end | Youhe Zhang, Yuelin Shen, Jibin Shi | 2017-08-22 |
| 9683410 | Cutter assemblies, downhole tools incorporating such cutter assemblies and methods of making such downhole tools | Youhe Zhang, Yuelin Shen, Gregory T. Lockwood | 2017-06-20 |
| 9605486 | Rolling cutter with close loop retaining ring | Jibin Shi, Chen Chen, Youhe Zhang | 2017-03-28 |
| 9482056 | Solid PCD cutter | Ronald K. Eyre, John Daniel Belnap, Youhe Zhang, Yuelin Shen, Jibin Shi | 2016-11-01 |
| 9464486 | Rolling cutter with bottom support | Youhe Zhang, Chen Chen, Jibin Shi | 2016-10-11 |
| 9464490 | Gage cutter protection for drilling bits | Youhe Zhang, Michael G. Azar, Chen Chen | 2016-10-11 |
| 9328564 | Cutting elements retained within sleeves | Youhe Zhang, Jibin Shi, Chen Chen | 2016-05-03 |
| 9322219 | Rolling cutter using pin, ball or extrusion on the bit body as attachment methods | Youhe Zhang, Yuelin Shen | 2016-04-26 |
| 9291000 | Rolling cutter with improved rolling efficiency | Youhe Zhang, Yuelin Shen, Kjell Haugvaldstad | 2016-03-22 |
| 9284790 | Innovative cutting element and cutting structure using same | Youhe Zhang, Jibin Shi | 2016-03-15 |
| 9187962 | Methods of attaching rolling cutters in fixed cutter bits using sleeve, compression spring, and/or pin(s)/ball(s) | Jiaqing Yu, Jonan Fulenchek, Youhe Zhang, Yuelin Shen | 2015-11-17 |