Issued Patents All Time
Showing 51–75 of 85 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7443359 | Locating technique and apparatus using an approximated dipole signal | Guenter W. Brune, John E. Mercer, Albert W. Chau | 2008-10-28 |
| 7425829 | Tracking positions of personnel, vehicles, and inanimate objects | Guenter W. Brune, Albert W. Chau, John E. Mercer | 2008-09-16 |
| 7347280 | Establishing positions of locating field detectors and path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, John E. Mercer, Lloyd A. Moore, Shiu S. Ng | 2008-03-25 |
| 7343816 | Tension monitoring arrangement and method | Albert W. Chau, John E. Mercer, Charles Yu Yat Tsang | 2008-03-18 |
| 7209093 | Locating technique and apparatus using an approximated dipole signal | Guenter W. Brune, John E. Mercer, Albert W. Chau | 2007-04-24 |
| 7159672 | Mapping tool for tracking and/or guiding an underground boring tool | John E. Mercer, Peter H. Hambling, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2007-01-09 |
| 7080698 | Mapping tool for tracking and/or guiding an underground boring tool | John E. Mercer, Peter H. Hambling, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2006-07-25 |
| 7068053 | Orientation sensor especially suitable for use in an underground boring device | John E. Mercer | 2006-06-27 |
| 7021403 | Method of establishing positions of locating field detectors and path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, John E. Mercer, Lloyd A. Moore, Shiu S. Ng | 2006-04-04 |
| 6993981 | Tension monitoring arrangement and method | Albert W. Chau, John E. Mercer, Charles Yu Yat Tsang | 2006-02-07 |
| 6927741 | Locating technique and apparatus using an approximated dipole signal | Guenter W. Brune, John E. Mercer, Albert W. Chau | 2005-08-09 |
| 6920943 | Mapping tool for tracking and/or guiding an underground boring tool | John E. Mercer, Peter H. Hambling, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2005-07-26 |
| 6903560 | Orientation sensor especially suitable for use in an underground boring device | John E. Mercer | 2005-06-07 |
| 6677768 | Orientation sensor especially suitable for use in an underground boring device | John E. Mercer | 2004-01-13 |
| 6668944 | Path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, John E. Mercer, Lloyd A. Moore, Shiu S. Ng | 2003-12-30 |
| 6640907 | Mapping tool for tracking and/or guiding an underground boring tool | John E. Mercer, Peter H. Hambling, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2003-11-04 |
| 6618951 | Orientation sensor utilizing intra-pattern property measurements | John E. Mercer | 2003-09-16 |
| 6536538 | Establishing positions of locating field detectors and path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, John E. Mercer, Lloyd A. Moore, Shiu S. Ng | 2003-03-25 |
| 6530155 | Orientation sensor utilizing intra-pattern property measurements | John E. Mercer | 2003-03-11 |
| 6457537 | Mapping tool for tracking and/or guiding an underground boring tool | John E. Mercer, Peter H. Hambling, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2002-10-01 |
| 6454023 | Mapping tool for tracking and/or guiding an underground boring tool | John E. Mercer, Peter H. Hambling, Shiu S. Ng, Guenter W. Brune, Lloyd A. Moore | 2002-09-24 |
| 6400159 | Orientation sensor especially suitable for use in an underground boring device | John E. Mercer | 2002-06-04 |
| 6364035 | Establishing positions of locating field detectors and path mapping in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, John E. Mercer, Lloyd A. Moore, Shiu S. Ng | 2002-04-02 |
| 6351892 | Orientation sensor utilizing intra-pattern property measurements | John E. Mercer | 2002-03-05 |
| 6250402 | Establishing positions of locating field detectors and path mappings in underground boring tool applications | Guenter W. Brune, Peter H. Hambling, John E. Mercer, Lloyd A. Moore, Shiu S. Ng | 2001-06-26 |