Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12326468 | Portable device with measuring leg for display of noise information in coordination with measured distance and transmission frequency selection | Albert W. Chau | 2025-06-10 |
| 12012849 | Advanced drill string communication system, components and methods | Albert W. Chau | 2024-06-18 |
| 11802900 | Portable device with removably attachable measuring leg | Albert W. Chau | 2023-10-31 |
| 11320474 | Portable device for noise measurement at locations along a path to determine one or more indications | Albert W. Chau | 2022-05-03 |
| 11255185 | Advanced drill string communication system and method | Albert W. Chau | 2022-02-22 |
| 11118447 | Directional drilling communication protocols, apparatus and methods | Albert W. Chau, Scott Phillips | 2021-09-14 |
| 11047896 | Portable device with electromagnetic noise measurement at multiple frequencies | Albert W. Chau | 2021-06-29 |
| 10598712 | Portable device with electromagnetic noise measurement for inground transmitter frequency selection | Albert W. Chau | 2020-03-24 |
| 10520536 | Apparatus for predicting a maximum operational depth for an underground drilling procedure and method | Albert W. Chau | 2019-12-31 |
| 10513919 | Advanced drill string communication system, components and methods | Albert W. Chau | 2019-12-24 |
| 10227867 | Directional drilling communication protocols, apparatus and methods | Albert W. Chau, Scott Phillips | 2019-03-12 |
| 9274243 | Advanced drill string communication system, components and methods | Albert W. Chau | 2016-03-01 |
| 8729901 | Measurement device and associated method for use in frequency selection for inground transmission | Albert W. Chau | 2014-05-20 |