- All sections
- E - Fixed constructions
- E03F - Sewers; cesspools
- E03F 7/04 - Valves for preventing return flow
Patent holdings for IPC class E03F 7/04
Total number of patents in this class: 86
10-year publication summary
|
15
|
9
|
13
|
2
|
11
|
10
|
12
|
8
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Watts Regulator Co. | 295 |
10 |
| Coscarella, Gabe | 52 |
8 |
| Lasso Technik AG | 6 |
3 |
| Red Valve Company, Inc. | 32 |
3 |
| TLV Co., Ltd. | 336 |
3 |
| 900 Ethan Allen Hwy LLC | 3 |
3 |
| 7525443 Canada Inc. | 7 |
2 |
| Oatey Co. | 215 |
2 |
| Korea Machinery Ind. Inc. | 2 |
2 |
| Adachi Construction Industry Co. Ltd. | 3 |
1 |
| Aqseptence Group, Inc. | 96 |
1 |
| A.Y. McDonald Mfg. Co. | 11 |
1 |
| Cambridge Brass, Inc. | 13 |
1 |
| Canplas Industries Ltd. | 93 |
1 |
| Connaught Lithoservices Ltd | 2 |
1 |
| Easy Sanitary Solutions B.V. | 45 |
1 |
| Flex-Seal Couplings Limited | 3 |
1 |
| Fluid Handling LLC | 242 |
1 |
| Hagepe International B.V. | 17 |
1 |
| Intelligent Environmental Systems B.V. | 1 |
1 |
| Other owners | 39 |