- All sections
- G - Physics
- G10L - Speech analysis techniques or speech synthesisspeech recognitionspeech or voice processing techniquesspeech or audio coding or decoding
- G10L 25/21 - Speech or voice analysis techniques not restricted to a single one of groups characterised by the type of extracted parameters the extracted parameters being power information
Patent holdings for IPC class G10L 25/21
Total number of patents in this class: 945
10-year publication summary
|
56
|
109
|
119
|
132
|
105
|
96
|
115
|
87
|
79
|
58
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4205 |
70 |
| Huawei Technologies Co., Ltd. | 116003 |
40 |
| Tencent Technology (Shenzhen) Company Limited | 15192 |
40 |
| Amazon Technologies, Inc. | 27247 |
37 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 5080 |
30 |
| Nokia Technologies Oy | 19221 |
30 |
| Samsung Electronics Co., Ltd. | 149198 |
27 |
| Cirrus Logic, Inc. | 1788 |
22 |
| Ericsson | 22003 |
18 |
| Bose Corporation | 3034 |
16 |
| Nippon Telegraph and Telephone Corporation | 16319 |
14 |
| Google LLC | 43134 |
14 |
| Voiceage Corporation | 117 |
13 |
| Biamp Systems, LLC | 325 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 32504 |
12 |
| Qualcomm Incorporated | 87720 |
10 |
| Microsoft Technology Licensing, LLC | 54340 |
10 |
| International Business Machines Corporation | 61747 |
8 |
| Texas Instruments Incorporated | 19498 |
8 |
| Electronics and Telecommunications Research Institute | 9359 |
8 |
| Other owners | 505 |