Issued Patents All Time
Showing 201–225 of 273 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6756784 | Orientation sensor arrangement and method for use in a system for monitoring the orientation of an underground boring tool | — | 2004-06-29 |
| 6756783 | Multi-frequency boring tool locating system and method | Guenter W. Brune | 2004-06-29 |
| 6737867 | Locating arrangement and method using boring tool and cable locating signals | Guenter W. Brune, Albert W. Chau | 2004-05-18 |
| 6727704 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, Albert W. Chau | 2004-04-27 |
| 6697174 | Arrangement for reading from and/or writing to flexible sheet media in a curved configuration and method | — | 2004-02-24 |
| 6693429 | Flux orientation locating in a drilling system | — | 2004-02-17 |
| 6677768 | Orientation sensor especially suitable for use in an underground boring device | Rudolf Zeller | 2004-01-13 |
| 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 |
| 6496008 | Flux plane locating in an underground drilling system | Guenter W. Brune, Albert W. Chau | 2002-12-17 |
| 6457537 | 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 | 2002-10-01 |
| 6454023 | 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 | 2002-09-24 |
| 6446728 | Auto-extending/retracting electrically isolated conductors in a segmented drill string | Albert W. Chau | 2002-09-10 |
| 6417666 | Boring tool tracking system and method using magnetic locating signal and wire-in-pipe data | — | 2002-07-09 |
| 6400159 | Orientation sensor especially suitable for use in an underground boring device | Rudolf Zeller | 2002-06-04 |
| 6396275 | Arrangement using measured pitch and locating field measurements to determine a positional relationship | — | 2002-05-28 |