- All sections
- G - Physics
- G08B - Signalling or calling systemsorder telegraphsalarm 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: 1025
10-year publication summary
|
67
|
115
|
96
|
140
|
94
|
84
|
65
|
68
|
61
|
35
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Konica Minolta, Inc. | 8729 |
127 |
| NEC Corporation | 35652 |
120 |
| Panasonic Intellectual Property Management Co., Ltd. | 31375 |
70 |
| Mitsubishi Electric Corporation | 46093 |
67 |
| Tyco Fire & Security GmbH | 3226 |
32 |
| Hitachi, Ltd. | 15484 |
18 |
| Sony Corporation | 31052 |
17 |
| Denso Corporation | 24282 |
16 |
| Omron Corporation | 7261 |
15 |
| Panasonic Corporation | 20110 |
13 |
| Kyocera Corporation | 13799 |
11 |
| Technomirai Co., Ltd. | 66 |
11 |
| Sharp Kabushiki Kaisha | 18744 |
11 |
| Nikon Corporation | 7163 |
10 |
| JVC Kenwood Corporation | 3008 |
10 |
| Honda Motor Co., Ltd. | 25251 |
8 |
| Nissan Motor Co., Ltd. | 12484 |
8 |
| A.i.viewlife Co.,Ltd. | 12 |
8 |
| Sumitomo Electric Industries, Ltd. | 15483 |
7 |
| Fujitsu Limited | 18351 |
7 |
| Other owners | 439 |