- All sections
- G - Physics
- G08B - Signalling or calling systems; order telegraphs; alarm systems
- G08B 21/16 - Combustible gas alarms
Patent holdings for IPC class G08B 21/16
Total number of patents in this class: 182
10-year publication summary
|
6
|
17
|
30
|
21
|
20
|
18
|
16
|
25
|
20
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Honeywell International Inc. | 14021 |
9 |
| Industrial Scientific Corporation | 84 |
9 |
| Chengdu Qinchuan IoT Technology Co., Ltd. | 389 |
9 |
| Project Canary, PBC | 47 |
7 |
| Itron, Inc. | 849 |
6 |
| Osaka Gas Co., Ltd. | 320 |
5 |
| Shenzhen Wintry Information Technology Co., Ltd. | 9 |
5 |
| Konica Minolta, Inc. | 8535 |
4 |
| Fuji Electric Co., Ltd. | 4980 |
4 |
| Dräger Safety AG & Co. KGaA | 407 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
3 |
| Carrier Corporation | 4451 |
3 |
| Sprue Safety Products Ltd. | 40 |
3 |
| Gas Activated Systems, Inc. | 6 |
3 |
| Overcast Innovations LLC | 27 |
3 |
| Ecotec IP Holdings, LLC | 4 |
3 |
| Applied Nanotech, Inc. | 16 |
2 |
| Safehouse Habitats (Scotland) Limited | 22 |
2 |
| Spinnaker International Limited | 15 |
2 |
| SunCoke Technology and Development LLC | 203 |
2 |
| Other owners | 94 |