- All sections
- G - Physics
- G08B - Signalling or calling systemsorder telegraphsalarm systems
- G08B 21/16 - Combustible gas alarms
Patent holdings for IPC class G08B 21/16
Total number of patents in this class: 189
10-year publication summary
|
5
|
17
|
29
|
21
|
18
|
16
|
16
|
25
|
21
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Chengdu Qinchuan IoT Technology Co., Ltd. | 450 |
10 |
| Honeywell International Inc. | 13540 |
9 |
| Industrial Scientific Corporation | 85 |
9 |
| Project Canary, PBC | 46 |
7 |
| Itron, Inc. | 884 |
6 |
| Osaka Gas Co., Ltd. | 312 |
5 |
| Shenzhen Wintry Information Technology Co., Ltd. | 9 |
5 |
| Konica Minolta, Inc. | 8755 |
4 |
| Fuji Electric Co., Ltd. | 5160 |
4 |
| Dräger Safety AG & Co. KGaA | 438 |
4 |
| Kanary Alert Systems, LLC | 4 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 31562 |
3 |
| Carrier Corporation | 4296 |
3 |
| Sprue Safety Products Ltd. | 38 |
3 |
| Gas Activated Systems | 5 |
3 |
| Overcast Innovations LLC | 28 |
3 |
| Ecotec IP Holdings, LLC | 4 |
3 |
| Weatherford Technology Holdings, LLC | 2023 |
2 |
| Applied Nanotech, Inc. | 16 |
2 |
| Safehouse Habitats (Scotland) Limited | 21 |
2 |
| Other owners | 98 |