Issued Patents All Time
Showing 176–200 of 273 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7151375 | Distinguishing false signals in cable locating | Albert W. Chau | 2006-12-19 |
| 7084636 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, Albert W. Chau | 2006-08-01 |
| 7080698 | 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 | 2006-07-25 |
| 7071695 | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal | Albert W. Chau | 2006-07-04 |
| 7068053 | Orientation sensor especially suitable for use in an underground boring device | Rudolf Zeller | 2006-06-27 |
| 7061244 | Flux orientation locating in a drilling system | — | 2006-06-13 |
| 7049820 | Boring technique using locate point measurements for boring tool depth prediction | — | 2006-05-23 |
| 7021403 | Method of 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 | 2006-04-04 |
| 7015697 | Multi-frequency boring tool locating system and method | Guenter W. Brune | 2006-03-21 |
| 6993981 | Tension monitoring arrangement and method | Albert W. Chau, Rudolf Zeller, Charles Yu Yat Tsang | 2006-02-07 |
| 6975119 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, Albert W. Chau | 2005-12-13 |
| 6963201 | Flux plane locating in an underground drilling system | Guenter W. Brune, Albert W. Chau | 2005-11-08 |
| 6954073 | Determination of actual path of inground device based on information corresponding to reference point measurements | — | 2005-10-11 |
| 6935439 | Boring tool control using remote locator | — | 2005-08-30 |
| 6927741 | Locating technique and apparatus using an approximated dipole signal | Guenter W. Brune, Albert W. Chau, Rudolf Zeller | 2005-08-09 |
| 6924645 | Position and orientation locator/monitor | — | 2005-08-02 |
| 6920943 | 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 | 2005-07-26 |
| 6917202 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, Albert W. Chau | 2005-07-12 |
| 6903560 | Orientation sensor especially suitable for use in an underground boring device | Rudolf Zeller | 2005-06-07 |
| 6882154 | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal | Albert W. Chau | 2005-04-19 |
| 6868921 | Boring tool tracking fundamentally based on drill string length, pitch and roll | James W. Burrows, Guenter W. Brune | 2005-03-22 |
| 6856135 | Boring tool tracking/guiding system and method with unconstrained target location geometry | Guenter W. Brune, Albert W. Chau | 2005-02-15 |
| 6838881 | Flux orientation locating in a drilling system | — | 2005-01-04 |
| 6838882 | Method for avoiding an inground obstacle at a known depth | — | 2005-01-04 |
| 6768307 | Flux plane locating in an underground drilling system | Guenter W. Brune, Albert W. Chau | 2004-07-27 |