- All sections
- H - Electricity
- H04B - Transmission
- H04B 13/02 - Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
Patent holdings for IPC class H04B 13/02
Total number of patents in this class: 528
10-year publication summary
|
39
|
45
|
46
|
45
|
40
|
42
|
34
|
41
|
30
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Magseis FF LLC | 131 |
17 |
| Halliburton Energy Services, Inc. | 21125 |
11 |
| Raytheon Company | 8472 |
11 |
| Elliptic Works LLC | 12 |
9 |
| Samsung Electronics Co., Ltd. | 152016 |
8 |
| The Boeing Company | 20102 |
8 |
| NEC Corporation | 36475 |
8 |
| BAE SYSTEMS plc | 2436 |
8 |
| Evolution Engineering Inc. | 300 |
8 |
| King Abdullah University of Science and Technology | 1830 |
8 |
| Nippon Telegraph and Telephone Corporation | 16263 |
7 |
| CPG Technologies, LLC | 99 |
7 |
| Hoseo University Academic Cooperation Foundation | 74 |
7 |
| South China University of Technology | 1850 |
7 |
| Electronics and Telecommunications Research Institute | 9457 |
6 |
| Woods Hole Oceanographic Institution | 140 |
6 |
| Csignum Ltd | 9 |
6 |
| Schlumberger Technology Corporation | 11326 |
5 |
| Massachusetts Institute of Technology | 10189 |
5 |
| Shimadzu Corporation | 6283 |
5 |
| Other owners | 371 |