Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5747983 | Apparatus and method for measuring potentials through pavements for buried pipeline cathodic protection systems | Mark Wilson Mateer | 1998-05-05 |
| 5670878 | Inspecting a conductive object with a steady state magnetic field and induced eddy current | Keith W. Katahara, Kenneth R. Riggs | 1997-09-23 |
| 5596267 | Apparatus and method for measuring potentials through pavements for buried pipeline cathodic protection systems | Mark Wilson Mateer | 1997-01-21 |
| 5461313 | Method of detecting cracks by measuring eddy current decay rate | William Mark Bohon | 1995-10-24 |
| 5233297 | Transient electromagnetic method and apparatus for inspecting conductive objects utilizing sensors that move during inspection | — | 1993-08-03 |
| 5115196 | Girth weld detection system for pipeline survey pig | Stanley Low, David L. Foreman, Steven G. Petermann | 1992-05-19 |
| 5029614 | Tandem seal system for testing pipelines | Steven G. Petermann | 1991-07-09 |
| 4929896 | Transient electromagnetic method for detecting irregularies on conductive containers having variations in jacket thickness | — | 1990-05-29 |
| 4843319 | Transient electromagnetic method for detecting corrosion on conductive containers having variations in jacket thickness | — | 1989-06-27 |
| 4799391 | Method for surveying fluid transmission pipelines | — | 1989-01-24 |
| 4747317 | System for surveying fluid transmission pipelines and the like | — | 1988-05-31 |
| 4717875 | Method and system for determining curvature in fluid transmission pipelines | — | 1988-01-05 |