Openfield
Versailles, FR· latest recorded location
OPENFIELD is named on 17 US grants and 17 published applications in this corpus. Its most frequent classification is E21B (Earth or rock drilling).
- Granted patents
- 17
- Published applications
- 17
- Inventors
- 3
- Granted in 2026 so far
- 1
- Most recent grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 3 | 3 |
| 2018 | 2 | 3 |
| 2019 | 2 | 2 |
| 2020 | 3 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Technology areas
Share of 34 documents
- E21BEarth or rock drilling32
- G01NInvestigating or analysing materials by determining their chemical or physical properties16
- G01VGeophysics12
- G01FMeasuring volume, volume flow, mass flow or liquid level6
- G06FComputing and data processing4
- B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic2
- B81CProcesses or apparatus specially adapted for the manufacture or treatment of microstructural2
- G01BMeasuring length, thickness or similar linear dimensions2
- G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves2
- G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure2
Recent patents
- Measuring water level in highly deviated or horizontal hydrocarbon well sections15 Sep 2026US 12,735,978 B2
- Production logging tool and downhole fluid analysis sensors vertical deploying method27 Feb 2024US 11,913,292 B2
- Microwave doppler flowmeter for hydrocarbon wells23 May 2023US 11,656,187 B2
- Method and device for depth positioning downhole tool and associated measurement log of a hydrocarbon well18 Apr 2023US 11,629,588 B2
- Production logging tool and downhole fluid analysis probes deploying method7 Jun 2022US 11,352,839 B2
- Water/oil emulsion sensor and downhole tool including such sensors4 Dec 2025US 2025/0369949 A1
- Measuring water level in highly deviated or horizontal hydrocarbon well sections2 Nov 2023US 2023/0349285 A1
- Production logging tool and downhole fluid analysis sensors vertical deploying method21 Jul 2022US 2022/0228447 A1
- Microwave doppler flowmeter for hydrocarbon wells24 Jun 2021US 2021/0190558 A1
- Production logging tool and downhole fluid analysis probes deploying method19 Nov 2020US 2020/0362645 A1
Most cited
By later US patents
- Fluid pressure sensor and measurement probe37US 8,931,347 B22015
- Probe, sonde and method for producing signals indicative of local phase composition of a fluid17US 9,952,192 B22018
- Downhole fluid properties analysis probe, tool and method15US 9,863,244 B22018
- Downhole acoustic transducer, downhole probe and tool comprising such a transducer13US 10,472,951 B22019
- Downhole fluid properties optical analysis probe having a removable optical tip13US 10,527,751 B22020