Issued Patents 2003
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668944 | Path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, Lloyd A. Moore, Shiu S. Ng, Rudolf Zeller | 2003-12-30 |
| 6655464 | Auto-extending/retracting electrically isolated conductors in a segmented drill string | Albert W. Chau | 2003-12-02 |
| 6653837 | Dipole field locate point determination using a horizontal flux vector | Guenter W. Brune, Albert W. Chau | 2003-11-25 |
| 6640907 | Mapping tool for tracking and/or guiding an underground boring tool | Peter H. Hambling, Rudolf Zeller, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2003-11-04 |
| 6618951 | Orientation sensor utilizing intra-pattern property measurements | Rudolf Zeller | 2003-09-16 |
| 6617854 | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal | Albert W. Chau | 2003-09-09 |
| 6593745 | Tracking system using locating signal measurements to regionally confine a boring tool relative to a measurement location | — | 2003-07-15 |
| 6559646 | Boring tool locating using sensing at spaced apart reference path locations | — | 2003-05-06 |
| 6536538 | Establishing positions of locating field detectors and path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, Lloyd A. Moore, Shiu S. Ng, Rudolf Zeller | 2003-03-25 |
| 6530155 | Orientation sensor utilizing intra-pattern property measurements | Rudolf Zeller | 2003-03-11 |
| 6525538 | Position and orientation locator/monitor | — | 2003-02-25 |