| 12031384 |
Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
Huimin Song, Liang Zhao, Youhe Zhang, Michael G. Azar, Xiaoge Gan +4 more |
2024-07-09 |
| 11215012 |
Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
Huimin Song, Liang Zhao, Youhe Zhang, Michael G. Azar, Xiaoge Gan +4 more |
2022-01-04 |
| 10774594 |
Rotating cutting structures and structures for retaining the same |
Youhe Zhang, Yuri Burhan |
2020-09-15 |
| 10774596 |
Rolling cutter stability |
Youhe Zhang, Yuri Burhan, Balasubramanian Durairajan, Sandeep Tammineni |
2020-09-15 |
| D874873 |
Knife handle |
— |
2020-02-11 |
| 10350770 |
Pattern knife assembly |
— |
2019-07-16 |
| 10287825 |
Cutting elements having non-planar surfaces and downhole cutting tools using such cutting elements |
Huimin Song, Liang Zhao, Youhe Zhang, Michael G. Azar, Xiaoge Gan +4 more |
2019-05-14 |
| 10267096 |
Drill bit rolling element with retaining ring |
Yuri Burhan, Jibin Shi, Youhe Zhang |
2019-04-23 |
| 10119341 |
Cutter with support liner |
Youhe Zhang, Yuri Burhan, Jibin Shi |
2018-11-06 |
| 9976356 |
Rolling cutter with retaining ring |
Yuri Burhan, Jibin Shi, Youhe Zhang |
2018-05-22 |
| 9869133 |
Method of using spring loaded blocker to retain rolling cutters or mechanical lock cutters |
Yuri Burhan, Jibin Shi |
2018-01-16 |
| 9605486 |
Rolling cutter with close loop retaining ring |
Yuri Burhan, Jibin Shi, Youhe Zhang |
2017-03-28 |
| 9464486 |
Rolling cutter with bottom support |
Youhe Zhang, Yuri Burhan, Jibin Shi |
2016-10-11 |
| 9464490 |
Gage cutter protection for drilling bits |
Youhe Zhang, Michael G. Azar, Yuri Burhan |
2016-10-11 |
| 9328564 |
Cutting elements retained within sleeves |
Youhe Zhang, Jibin Shi, Yuri Burhan |
2016-05-03 |
| D499301 |
Knife holder |
— |
2004-12-07 |
| D498394 |
Knife hilt |
— |
2004-11-16 |
| D497523 |
Knife holder |
— |
2004-10-26 |
| D494441 |
Knife hilt |
— |
2004-08-17 |
| D469666 |
Knife handle |
— |
2003-02-04 |
| D468972 |
Knife hilt |
— |
2003-01-21 |
| D445663 |
Handle grip with ellipsoidal end |
— |
2001-07-31 |
