- All sections
- G - Physics
- G08B - Signalling or calling systems; order telegraphs; alarm systems
- G08B 25/04 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop
Patent holdings for IPC class G08B 25/04
Total number of patents in this class: 958
10-year publication summary
|
50
|
67
|
115
|
96
|
140
|
94
|
83
|
64
|
66
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8349 |
123 |
| NEC Corporation | 32703 |
104 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
67 |
| Mitsubishi Electric Corporation | 43934 |
66 |
| Tyco Fire & Security GmbH | 2172 |
29 |
| Hitachi, Ltd. | 16452 |
18 |
| Sony Corporation | 32931 |
17 |
| Denso Corporation | 23338 |
17 |
| Omron Corporation | 6968 |
15 |
| Panasonic Corporation | 20786 |
13 |
| Technomirai Co., Ltd. | 65 |
12 |
| Kyocera Corporation | 12735 |
11 |
| Sharp Kabushiki Kaisha | 18957 |
11 |
| Honda Motor Co., Ltd. | 24537 |
8 |
| JVC Kenwood Corporation | 2774 |
8 |
| A.i.viewlife Co.,Ltd. | 12 |
8 |
| Fujitsu Limited | 19265 |
7 |
| Nissan Motor Co., Ltd. | 12249 |
7 |
| The Chugoku Electric Power Co., Inc. | 498 |
7 |
| Noritsu Precision Co., Ltd. | 43 |
7 |
| Other owners | 403 |