Paul A. Johnson
20Patents
5h-index
18Co-inventors
66Inventor score
Filing activity: Jan 4, 1993 → Dec 6, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8116167B2 | Method and system for generating a beam of acoustic energy from a borehole, and applications thereof | Physics | 17 | Active |
| US11341410B1 | Subsurface stress criticality associated with fluid injection and determined using machine learning | Physics | 16 | Active |
| US11169288B1 | Failure prediction and estimation of failure parameters | Physics | 14 | Active |
| US8923092B2 | System and method for investigating sub-surface features of a rock formation with acoustic sources generating coded signals | Physics | 9 | Active |
| US6330827A | Resonant nonlinear ultrasound spectroscopy | Physics | 9 | Expired |
| US5369997A | Active doublet method for measuring small changes in physical properties | Physics | 5 | Expired |
| US8345509B2 | System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole | Physics | 5 | Active |
| US8576661B2 | Device and method for imaging of non-linear and linear properties of formations surrounding a borehole | Physics | 4 | Active |
| US8553495B2 | Device and method for imaging of non-linear and linear properties of formations surrounding a borehole | Physics | 3 | Active |
| US9453926B2 | System and method for investigating sub-surface features of a rock formation using compressional acoustic sources | Physics | 3 | Active |
| US11067711B2 | Time-reversed nonlinear acoustic downhole pore pressure measurements | Physics | 3 | Active |
| US9223039B2 | System and method for generating micro-seismic events and characterizing properties of a medium with non-linear acoustic interactions | Physics | 2 | Active |
| US8289808B2 | System and method to estimate compressional to shear velocity (VP/VS) ratio in a region remote from a borehole | Physics | 2 | Active |
| US11079505B2 | Time-reversed nonlinear acoustics for downhole pressure measurements | Physics | 1 | Active |
| US8942063B2 | Data acquisition and processing system and method for investigating sub-surface features of a rock formation | Physics | 1 | Active |
| US11029435B2 | Downhole nonlinear acoustics measurements in rock formations using dynamic acoustic elasticity and time reversal | Physics | 1 | Active |
| US9110178B2 | System and method for investigating sub-surface features of a rock formation with acoustic sources generating conical broadcast signals | Physics | 0 | Active |
| US9110179B2 | Integrated system for investigating sub-surface features of a rock formation | Physics | 0 | Active |
| US9360573B2 | System and method for generating 3D images of non-linear properties of rock formation using surface seismic or surface to borehole seismic or both | Physics | 0 | Active |
| US9046620B2 | System and method for investigating sub-surface features and 3D imaging of non-linear property, compressional velocity VP, shear velocity VS and velocity ratio VP/VS of a rock formation | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.