Patent holdings for IPC class G04R 20/18

Total number of patents in this class: 13

10-year publication summary

5
2
1
0
0
0
0
0
0
0
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Ericsson
22203
3
Casio Computer Co., Ltd.
3470
3
BlackBerry Limited
5110
1
Qualcomm Incorporated
89294
1
Seiko Epson Corporation
19881
1
Brother Industries, Ltd.
12905
1
NTT DoCoMo, Inc.
14100
1
Malikie Innovations Limited
6775
1
Electrolux Consumer Products, Inc.
832
1
Other owners 0