Patent holdings for IPC class G04R 20/14

Total number of patents in this class: 27

10-year publication summary

6
3
3
3
1
1
1
0
1
0
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Casio Computer Co., Ltd.
3502
5
Sony Corporation
30208
3
Panasonic Intellectual Property Management Co., Ltd.
33911
2
Tata Communications (America) Inc.
97
2
Tencent Technology (Shenzhen) Company Limited
15955
2
Apple Inc.
58705
1
Qualcomm Incorporated
91997
1
Seiko Epson Corporation
20248
1
Brother Industries, Ltd.
12842
1
Mitsubishi Electric Corporation
47971
1
Huawei Technologies Co., Ltd.
123282
1
Continental Automotive GmbH
4507
1
Festina Lotus, S.A.
82
1
GREE Electric Appliances, Inc. of Zhuhai
3316
1
Institute of Geology and Geophysics, Chinese Academy of Sciences
354
1
Goertek Technology Co.,Ltd.
444
1
Chipsen Co., Ltd
1
1
Honor Device Co., Ltd.
6817
1
Other owners 0