- 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: 558
10-year publication summary
|
40
|
47
|
49
|
46
|
43
|
43
|
35
|
45
|
31
|
33
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Magseis FF LLC | 130 |
17 |
| Halliburton Energy Services, Inc. | 21259 |
12 |
| Raytheon Company | 8458 |
11 |
| Elliptic Works LLC | 15 |
10 |
| NEC Corporation | 37589 |
9 |
| Samsung Electronics Co., Ltd. | 159978 |
8 |
| The Boeing Company | 20230 |
8 |
| BAE SYSTEMS plc | 2535 |
8 |
| Evolution Engineering Inc. | 302 |
8 |
| King Abdullah University of Science and Technology | 1877 |
8 |
| South China University of Technology | 1930 |
8 |
| Schlumberger Technology Corporation | 12016 |
7 |
| Nippon Telegraph and Telephone Corporation | 15894 |
7 |
| CPG Technologies, LLC | 99 |
7 |
| Hoseo University Academic Cooperation Foundation | 82 |
7 |
| Saltenna Inc. | 30 |
7 |
| Rutgers, The State University of New Jersey | 1999 |
6 |
| ThyssenKrupp AG | 3343 |
6 |
| Woods Hole Oceanographic Institution | 152 |
6 |
| Electronics and Telecommunications Research Institute | 9729 |
5 |
| Other owners | 393 |