Issued Patents All Time
Showing 126–150 of 273 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7956614 | Flux plane locating in an underground drilling system | Guenter W. Brune, Albert W. Chau | 2011-06-07 |
| 7926589 | Boring tool control using remote locator | — | 2011-04-19 |
| 7898494 | Locating technique and apparatus using an approximated dipole signal | Guenter W. Brune, Albert W. Chau, Rudolf Zeller | 2011-03-01 |
| 7888939 | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal | Albert W. Chau | 2011-02-15 |
| 7884610 | Distinguishing false signals in cable locating | Albert W. Chau | 2011-02-08 |
| 7863900 | Method for establishing a portion of a boring tool path | — | 2011-01-04 |
| 7859249 | Tracking positions of personnel, vehicles, and inanimate objects | Rudolf Zeller, Guenter W. Brune, Albert W. Chau | 2010-12-28 |
| 7834631 | Locating arrangement and method using boring tool and cable locating signals | Guenter W. Brune, Albert W. Chau | 2010-11-16 |
| 7786732 | Apparatus for monitoring a positional relationship between a boring tool and an inground line | Albert W. Chau | 2010-08-31 |
| 7775121 | Tension monitoring arrangement and method | Albert W. Chau, Rudolf Zeller, Charles Yu Yat Tsang | 2010-08-17 |
| 7775301 | Advanced steering tool system, method and apparatus | Guenter W. Brune, Albert W. Chau, Rudolf Zeller | 2010-08-17 |
| 7772849 | Tracking positions of personnel, vehicles, and inanimate objects | Rudolf Zeller, Guenter W. Brune, Albert W. Chau | 2010-08-10 |
| 7768265 | Flux plane locating in an underground drilling system | Guenter W. Brune, Albert W. Chau | 2010-08-03 |
| 7743848 | Boring tool tracking fundamentally based on drill string length, pitch, and roll | James W. Burrows, Guenter W. Brune | 2010-06-29 |
| 7728595 | Multi-frequency in-ground locating signal frequency code identification and apparatus | Guenter W. Brune | 2010-06-01 |
| 7724404 | Arrangement for reading from and/or writing to flexible sheet media in a curved configuration and method | — | 2010-05-25 |
| 7663371 | Flux plane locating in an underground drilling system | Guenter W. Brune, Albert W. Chau | 2010-02-16 |
| 7586307 | Locating arrangement and method using boring tool and cable locating signals | Guenter W. Brune, Albert W. Chau | 2009-09-08 |
| 7586308 | Phase shifted locating signal as compensation for a coupling configuration phase shift in discriminating a false locating signal | Albert W. Chau | 2009-09-08 |
| 7578201 | Tension monitoring arrangement and method | Albert W. Chau, Rudolf Zeller, Charles Yu Yat Tsang | 2009-08-25 |
| 7570060 | Tracking positions of personnel, vehicles, and inanimate objects | Rudolf Zeller, Guenter W. Brune, Albert W. Chau | 2009-08-04 |
| 7562722 | Method and apparatus for establishing the position of a sonde in a region using a single detector | Guenter W. Brune, Peter H. Hambling, Lloyd A. Moore, Shiu S. Ng, Rudolf Zeller | 2009-07-21 |
| 7548065 | Skin depth compensation for an in-ground transmitter | Guenter W. Brune | 2009-06-16 |
| 7521933 | Position and orientation locator/monitor | — | 2009-04-21 |
| 7495445 | Flux orientation locating in a drilling system | — | 2009-02-24 |