- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 25/49 - Transmitting circuitsReceiving circuits using code conversion at the transmitterTransmitting circuitsReceiving circuits using predistortionTransmitting circuitsReceiving circuits using insertion of idle bits for obtaining a desired frequency spectrumTransmitting circuitsReceiving circuits using three or more amplitude levels
Patent holdings for IPC class H04L 25/49
Total number of patents in this class: 2396
10-year publication summary
|
187
|
170
|
225
|
151
|
142
|
124
|
118
|
94
|
117
|
45
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qualcomm Incorporated | 90221 |
137 |
| Huawei Technologies Co., Ltd. | 120098 |
96 |
| Samsung Electronics Co., Ltd. | 153845 |
87 |
| Kandou Labs, S.A. | 333 |
86 |
| Texas Instruments Incorporated | 19631 |
54 |
| Micron Technology, Inc. | 27285 |
50 |
| Intel Corporation | 46680 |
49 |
| Avago Technologies International Sales Pte. Limited | 8613 |
40 |
| ZTE Corporation | 43598 |
37 |
| Ericsson | 22292 |
36 |
| Infineon Technologies AG | 8377 |
36 |
| Sony Corporation | 30397 |
34 |
| Rambus Inc. | 2225 |
29 |
| Microchip Technology Incorporated | 3200 |
29 |
| LG Electronics Inc. | 74968 |
28 |
| Apple Inc. | 58074 |
27 |
| Marvell Asia PTE, Ltd. | 6347 |
25 |
| Cavium International | 4765 |
23 |
| NEC Corporation | 36616 |
22 |
| Telefonaktiebolaget LM Ericsson (publ) | 28616 |
21 |
| Other owners | 1450 |