- 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: 931
10-year publication summary
|
56
|
109
|
119
|
132
|
105
|
96
|
115
|
87
|
79
|
48
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4152 |
70 |
| Huawei Technologies Co., Ltd. | 114071 |
39 |
| Tencent Technology (Shenzhen) Company Limited | 14950 |
39 |
| Amazon Technologies, Inc. | 27003 |
36 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 5010 |
30 |
| Nokia Technologies Oy | 18321 |
29 |
| Samsung Electronics Co., Ltd. | 147787 |
27 |
| Cirrus Logic, Inc. | 1784 |
22 |
| Ericsson | 21917 |
18 |
| Bose Corporation | 3002 |
16 |
| Nippon Telegraph and Telephone Corporation | 17324 |
14 |
| Google LLC | 42628 |
14 |
| Voiceage Corporation | 118 |
13 |
| Biamp Systems, LLC | 241 |
13 |
| Panasonic Intellectual Property Management Co., Ltd. | 32052 |
12 |
| Qualcomm Incorporated | 86648 |
10 |
| Microsoft Technology Licensing, LLC | 53968 |
10 |
| International Business Machines Corporation | 61537 |
8 |
| Texas Instruments Incorporated | 19462 |
8 |
| Electronics and Telecommunications Research Institute | 9444 |
8 |
| Other owners | 495 |