- All sections
- H - Electricity
- H04B - Transmission
- H04B 1/56 - Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
Patent holdings for IPC class H04B 1/56
Total number of patents in this class: 269
10-year publication summary
|
30
|
23
|
32
|
34
|
15
|
11
|
5
|
9
|
5
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 54610 |
32 |
| Huawei Technologies Co., Ltd. | 111764 |
19 |
| Intel Corporation | 46893 |
18 |
| Qualcomm Incorporated | 84847 |
14 |
| LG Electronics Inc. | 72737 |
10 |
| Murata Manufacturing Co., Ltd. | 24444 |
9 |
| The Board of Trustees of the Leland Stanford Junior University | 6396 |
6 |
| Photonic Systems, Inc. | 46 |
6 |
| Samsung Electronics Co., Ltd. | 145025 |
5 |
| Ericsson | 21674 |
5 |
| Nokia Technologies Oy | 17637 |
5 |
| Skyworks Solutions, Inc. | 3708 |
5 |
| Canon Inc. | 39660 |
3 |
| Texas Instruments Incorporated | 19494 |
3 |
| Massachusetts Institute of Technology | 10030 |
3 |
| National Semiconductor Corporation | 1102 |
3 |
| Motorola Solutions, Inc. | 4404 |
3 |
| Qorvo US, Inc. | 2203 |
3 |
| Marvell Asia PTE, Ltd. | 6551 |
3 |
| Avago Technologies International Sales Pte. Limited | 8786 |
3 |
| Other owners | 111 |