Mud motor bearing assembly for use with a drilling system
US-11655678-B2 · May 23, 2023 · US
This page is not indexed by search engines while we improve data quality.
Hardin John patents
Hardin John is listed as an inventor on 3 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Hardin John |
| Total patents | 3 |
| First publication | Dec 13, 2016 |
| Latest publication | May 23, 2023 |
Notable patents
Publications ranked by popularity score, then publication date.
Mud Motor Bearing Assembly for use with a Drilling System
US-2023011364-A1 · Jan 12, 2023 · US
Exhaust gas flow distribution system
US-9518496-B2 · Dec 13, 2016 · US
Recent patents
Latest publications not already listed above.
No data yet.
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Halliburton Energy Services Inc | 2 |
| Tenneco Automotive Operating Co Inc | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B4/003 | 2 |
| E21B4/02 | 2 |
| E21B7/068 | 2 |
| F01N13/009 | 1 |
| F01N3/2892 | 1 |