- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/21 - Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
Patent holdings for IPC class H04M 1/21
Total number of patents in this class: 517
10-year publication summary
|
69
|
55
|
59
|
51
|
60
|
41
|
25
|
30
|
23
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 74447 |
28 |
| Gui Global Products, LTD, GUI Global Management, LLC, Texas | 39 |
21 |
| ZTE Corporation | 43404 |
19 |
| Apple Inc. | 57234 |
17 |
| ElectroCore, Inc. | 157 |
17 |
| Kyocera Corporation | 14195 |
14 |
| Samsung Electronics Co., Ltd. | 151726 |
11 |
| STM Management Pty Ltd | 61 |
10 |
| KT & G Corporation | 2872 |
9 |
| DDC Technology, LLC | 10 |
9 |
| Huawei Technologies Co., Ltd. | 118321 |
8 |
| The Boeing Company | 20111 |
7 |
| Sony Ericsson Mobile Communications AB | 1591 |
6 |
| Panasonic Corporation | 19867 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 33033 |
4 |
| HTC Corporation | 2361 |
4 |
| Motorola Mobility LLC | 2752 |
4 |
| Sensirion AG | 209 |
4 |
| Vapor Communications, Inc. | 17 |
4 |
| Sharp Kabushiki Kaisha | 18635 |
4 |
| Other owners | 312 |