Inventor
Juei Igarashi
Inventor
Yokohama, JP
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling47%
G01CMeasuring distances, levels or bearings32%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure5%
G01RMeasuring electric variables5%
G01VGeophysics5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
10,982,530Apparatus, system and method of a magnetically shielded wellbore gyroscope202110,458,226Shock and vibration damper system and methodology20199,435,649'Method and system for azimuth measurements using a gyroscope unit'20168,200,436'Method and apparatus for wellbore survey using inertial sensors'20128,136,406'Pressure transducer with piezoelectric crystal for harsh environment use'20128,061,047'Active positioning of downhole devices using spherical motors'20118,061,048'Apparatus for azimuth measurements using gyro sensors'20117,801,704'Method and system for azimuth measurements using gyro sensors'20107,720,323'High-temperature downhole devices'20107,712,223'Apparatus for azimuth measurements using gyro sensors'20107,413,011'Optical fiber system and method for wellhole sensing of magnetic permeability using diffraction effect of faraday rotator'20086,170,601'Borehole seismic tool'2001Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2001–2021Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (12)· patent assignee history
2001–2021Based in Yokohama, JP· patent location history
2010–2019Based in Kanagawa, JP· patent location history
2011–2016Patents assigned to IGARASHI JUEI (5)· patent assignee history
2011–2016Patents assigned to SATO SHIGERU (4)· patent assignee history
2011–2012Patents assigned to YAMATE TSUTOMU (2)· patent assignee history
2011Patents assigned to CHO BRIAN W (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SCHLUMBERGER TECHNOLOGY CORP | 12 | 2001–2021 |
| IGARASHI JUEIself | 5 | 2011–2016 |
| SATO SHIGERU | 4 | 2011–2016 |
| YAMATE TSUTOMU | 2 | 2011–2012 |
| CHO BRIAN W | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 9 | 2001–2021 |
| Kanagawa, JP | 3 | 2010–2019 |