Core Laboratories LP
🏢 View company profile →31Patents
9Active
31Granted
44Portfolio score
Filing activity: Jul 5, 1977 → Mar 6, 2023 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7032662B2 | Method for determining the extent of recovery of materials injected into oil wells or subsurface formations during oil and gas exploration and production | Emerging Cross-Sectional Technologies | 85 | Expired |
| US4555934A | Method and apparatus for nonsteady state testing of permeability | Physics | 47 | Expired |
| US6659175B2 | Method for determining the extent of recovery of materials injected into oil wells during oil and gas exploration and production | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4562726A | Method and apparatus for testing the compressibility of subterranean samples | Physics | 29 | Expired |
| US4426878A | Viscosimeter | Physics | 29 | Expired |
| US7059404B2 | Variable intensity memory gravel pack imaging apparatus and method | Physics | 19 | Expired |
| US4539837A | Driven-capillary viscosimeter | Physics | 18 | Expired |
| US6554065B2 | Memory gravel pack imaging apparatus and method | Fixed Constructions | 16 | Expired |
| US4402229A | Cable tension measuring apparatus | Physics | 15 | Expired |
| US6430508B1 | Transfer function method of seismic signal processing and exploration | Physics | 11 | Expired |
| US6640899B2 | Apparatus and methods for jarring | Fixed Constructions | 10 | Expired |
| US7228896B2 | Ribbed sealing element and method of use | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4524420A | Signal processing apparatus | Physics | 9 | Expired |
| US4119404A | Apparatus and method for sour gas analysis | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5048531A | Pressure sensors and manufacture thereof | Human Necessities | 9 | Expired |
| US4537063A | Nonsteady-state core holder | Physics | 8 | Expired |
| US6778907B1 | Method for estimation of propagation paths for seismic signals | Physics | 8 | Expired |
| US4419314A | Method of coating core samples | Performing Operations; Transporting | 7 | Expired |
| US7079242B2 | Method and apparatus for determining characteristics of particles in a fluid sample | Physics | 6 | Expired |
| US7410011B2 | Method to determine the concentration of deuterium oxide in a subterranean formation | Fixed Constructions | 6 | Expired |
| US4419879A | Particle measuring apparatus | Physics | 4 | Expired |
| US4566311A | Mercury pump | Physics | 4 | Expired |
| US7542139B2 | Method and apparatus for determining characteristics of particles in a fluid sample | Physics | 3 | Active |
| US11885216B2 | Perforating and tracer injection system for oilfield applications | Fixed Constructions | 1 | Active |
| US9682848B2 | System and method for a self-contained lifting device | Fixed Constructions | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.