Patent holdings for IPC class G04R 20/18

Total number of patents in this class: 13

10-year publication summary

1
5
2
1
0
0
0
0
0
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Ericsson
21476
3
Casio Computer Co., Ltd.
3422
3
BlackBerry Limited
5167
1
Qualcomm Incorporated
83961
1
Seiko Epson Corporation
19206
1
Brother Industries, Ltd.
12945
1
NTT DoCoMo, Inc.
12696
1
Malikie Innovations Limited
7230
1
Electrolux Consumer Products, Inc.
836
1
Other owners 0