Issued Patents 2011
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8080998 | Distinguishing false signals in cable locating using a reference signal | Albert W. Chau | 2011-12-20 |
| 8042407 | Tension monitoring arrangement and method | Albert W. Chau, Rudolf Zeller, Charles Yu Yat Tsang | 2011-10-25 |
| 8025109 | Method for establishing the positions of a transmitter and detector in a region | Guenter W. Brune, Peter H. Hambling, Lloyd A. Moore, Shiu S. Ng, Rudolf Zeller | 2011-09-27 |
| 7990152 | Locating arrangement and method using boring tool and cable locating signals | Guenter W. Brune, Albert W. Chau | 2011-08-02 |
| 7990150 | Multifrequency locating arrangement with frequency designation | Guenter W. Brune | 2011-08-02 |
| 7973982 | Arrangement for reading from and/or writing to flexible sheet media in a curved configuration and method | — | 2011-07-05 |
| 7967080 | Boring tool tracking fundamentally based on drill string length, pitch and roll | James W. Burrows, Guenter W. Brune | 2011-06-28 |
| 7960973 | Tracking positions of personnel, vehicles, and inanimate objects | Rudolf Zeller, Guenter W. Brune, Albert W. Chau | 2011-06-14 |
| 7954614 | Drive mechanism and method | — | 2011-06-07 |
| 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 |