- All sections
- H - Electricity
- H04B - Transmission
- H04B 3/48 - Testing attenuation
Patent holdings for IPC class H04B 3/48
Total number of patents in this class: 64
10-year publication summary
|
8
|
7
|
9
|
4
|
9
|
4
|
10
|
5
|
6
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 100781 |
8 |
| Cable Television Laboratories, Inc. | 876 |
4 |
| AT&T Intellectual Property I, L.P. | 9886 |
3 |
| British Telecommunications Public Limited Company | 2575 |
3 |
| Marvell Asia PTE, Ltd. | 6841 |
3 |
| International Business Machines Corporation | 60644 |
2 |
| Igus GmbH | 471 |
2 |
| LEONI Kabel GmbH | 264 |
2 |
| Avago Technologies International Sales Pte. Limited | 9260 |
2 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
2 |
| Qualcomm Incorporated | 76576 |
1 |
| Illinois Tool Works Inc. | 11152 |
1 |
| Sony Corporation | 32931 |
1 |
| Intel Corporation | 45621 |
1 |
| Hitachi, Ltd. | 16452 |
1 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| RPX Corporation | 1571 |
1 |
| Nokia Solutions And Networks Oy | 5698 |
1 |
| National Instruments Corporation | 842 |
1 |
| Alstom Transport Technologies | 566 |
1 |
| Other owners | 23 |