Hitoshi Tashiro
16Patents
10h-index
36Co-inventors
72Inventor score
Filing activity: Jul 16, 1992 → Jul 10, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8297367B2 | Mechanism for activating a plurality of downhole devices | Fixed Constructions | 61 | Active |
| US7896088B2 | Wellsite systems utilizing deployable structure | Fixed Constructions | 26 | Active |
| US5240520A | High strength, ultra fine steel wire having excellent workability in stranding and process and apparatus for producing the same | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6474439B1 | Dipole logging tool | Physics | 21 | Expired |
| US7336562B1 | Sonic logging tool including receiver and spacer structure | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7757782B2 | Methods and apparatus for navigating a tool downhole | Fixed Constructions | 15 | Active |
| US7926438B2 | Subsea operations support system | Performing Operations; Transporting | 12 | Active |
| US6494288B1 | Acoustic logging tool | Physics | 12 | Expired |
| US6739423B2 | Acoustic logging tool | Emerging Cross-Sectional Technologies | 10 | Expired |
| US8890341B2 | Harvesting energy from a drillstring | Fixed Constructions | 10 | Active |
| US8061047B2 | Active positioning of downhole devices using spherical motors | Physics | 6 | Active |
| US9188698B2 | Expandable downhole tool | Emerging Cross-Sectional Technologies | 3 | Active |
| US9617462B2 | Degradable composite materials and uses | Fixed Constructions | 3 | Active |
| US6344107B1 | Automatic deposition machine | Performing Operations; Transporting | 1 | Expired |
| US9803462B2 | Reducing axial wave reflections and identifying sticking in wireline cables | Fixed Constructions | 1 | Active |
| US9133676B2 | Reducing axial wave reflections and identifying sticking in wireline cables | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.