Hydraulic control apparatus and method for a downhole tool
US-12435585-B1 · Oct 7, 2025 · US
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Waddell Kevin patents
Waddell Kevin is listed as an inventor on 6 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Waddell Kevin |
| Total patents | 6 |
| First publication | Feb 14, 2017 |
| Latest publication | Oct 7, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Sensor system with an interior sensor and a piezoelectric power supply
US-2025047220-A1 · Feb 6, 2025 · US
Sensor system with an interior sensor and a piezoelectric power supply
US-12218610-B1 · Feb 4, 2025 · US
Cutting elements with reduced variable back rake angle
US-12011773-B2 · Jun 18, 2024 · US
Cutting Elements with Reduced Variable Back Rake Angle
US-2021370419-A1 · Dec 2, 2021 · US
Systems and methods of performing NMR spectroscopy and MRI
US-9566354-B2 · Feb 14, 2017 · 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 |
|---|---|
| Cnpc Usa Corp | 5 |
| Beijing Huamei Inc | 5 |
| China Nat Petroleum Corp | 3 |
| Univ Vanderbilt | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B47/017 | 2 |
| H02N2/186 | 2 |
| E21B41/0085 | 2 |
| E21B47/013 | 2 |
| B23C5/202 | 2 |