Patent holdings for IPC class G04R 20/14

Total number of patents in this class: 27

10-year publication summary

3
6
3
3
3
1
1
1
0
1
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Casio Computer Co., Ltd.
3432
5
Sony Corporation
31028
3
Panasonic Intellectual Property Management Co., Ltd.
31515
2
Tata Communications (America) Inc.
93
2
Tencent Technology (Shenzhen) Company Limited
14799
2
Apple Inc.
55017
1
Qualcomm Incorporated
85550
1
Seiko Epson Corporation
19371
1
Brother Industries, Ltd.
12955
1
Mitsubishi Electric Corporation
46160
1
Huawei Technologies Co., Ltd.
113006
1
Continental Automotive GmbH
4775
1
Festina Lotus, S.A.
84
1
GREE Electric Appliances, Inc. of Zhuhai
3246
1
Institute of Geology and Geophysics, Chinese Academy of Sciences
326
1
Goertek Technology Co.,Ltd.
414
1
Chipsen Co., Ltd
1
1
Honor Device Co., Ltd.
5342
1
Other owners 0