Downhole tools having radially extendable elements
US-2026036001-A1 · Feb 5, 2026 · US
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Marshall Jonathan D patents
Marshall Jonathan D is listed as an inventor on 47 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Marshall Jonathan D |
| Total patents | 47 |
| First publication | Jan 8, 2015 |
| Latest publication | Feb 5, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Downhole tools having radially extendable elements
US-12435575-B2 · Oct 7, 2025 · US
Systems and methods of controlling downhole behavior
US-12018556-B2 · Jun 25, 2024 · US
Downhole tools having radially extendable elements
US-2024044212-A1 · Feb 8, 2024 · US
Downhole tools having radially extendable elements
US-11795763-B2 · Oct 24, 2023 · US
Actuation valve system with pilot and main valves
US-11795781-B2 · Oct 24, 2023 · US
Downhole steering system and methods
US-11788359-B2 · Oct 17, 2023 · US
Downhole transducer assemblies and pressure range control therein
US-11767723-B2 · Sep 26, 2023 · US
Downhole turbine assembly
US-11639648-B2 · May 2, 2023 · US
Controlling fluid flow through a valve
US-11608719-B2 · Mar 21, 2023 · US
Recent patents
Latest publications not already listed above.
Marking and sensing a borehole wall
US-11542805-B2 · Jan 3, 2023 · US
Pressure range control in a downhole transducer assembly
US-11255143-B2 · Feb 22, 2022 · US
Downhole transducer assemblies and pressure range control therein
US-2022034179-A1 · Feb 3, 2022 · US
Downhole drilling apparatus with rotatable cutting element
US-11220865-B2 · Jan 11, 2022 · US
Downhole steering system and methods
US-2021404260-A1 · Dec 30, 2021 · US
Downhole tools having radially extendable elements
US-2021388679-A1 · Dec 16, 2021 · US
Systems and methods of controlling downhole behavior
US-2021324726-A1 · Oct 21, 2021 · US
Downhole drilling apparatus with drilling, steering, and reaming functions and methods of use
US-11125020-B2 · Sep 21, 2021 · US
Downhole steering system and methods
US-11118408-B2 · Sep 14, 2021 · US
Piston control via adjustable rod
US-11053961-B2 · Jul 6, 2021 · US
Actuation valve system with pilot and main valves
US-2021198977-A1 · Jul 1, 2021 · US
Controlling fluid flow through a valve
US-2021172296-A1 · Jun 10, 2021 · US
Downhole rate of penetration measurement
US-11028685-B2 · Jun 8, 2021 · US
Downhole turbine assembly
US-2021140277-A1 · May 13, 2021 · US
Pressure range control in a downhole transducer assembly
US-2021131204-A1 · May 6, 2021 · US
Pilot controlled actuation valve system
US-10947814-B2 · Mar 16, 2021 · US
Underreamer for increasing a wellbore diameter
US-10947787-B2 · Mar 16, 2021 · US
Systems and methods for directing fluid flow
US-10927647-B2 · Feb 23, 2021 · US
Indexing drill bit
US-10731420-B2 · Aug 4, 2020 · US
Hard bearing attachment and alignment systems, apparatus, and techniques
US-10711833-B2 · Jul 14, 2020 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Schlumberger Technology Corp | 42 |
| Novatek Ip Llc | 6 |
| Smith International | 5 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B10/322 | 11 |
| E21B41/0085 | 10 |
| E21B7/062 | 7 |
| E21B4/003 | 6 |
| E21B7/28 | 6 |