- All sections
- E - Fixed constructions
- E03F - Sewerscesspools
- E03F 7/04 - Valves for preventing return flow
Patent holdings for IPC class E03F 7/04
Total number of patents in this class: 71
10-year publication summary
|
15
|
9
|
13
|
2
|
11
|
10
|
12
|
8
|
5
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Watts Regulator Co. | 306 |
10 |
| Red Valve Company, Inc. | 37 |
5 |
| Lasso Technik AG | 6 |
3 |
| TLV Co., Ltd. | 334 |
3 |
| 900 Ethan Allen Hwy LLC | 3 |
3 |
| 7525443 Canada Inc. | 7 |
2 |
| Oatey Co. | 213 |
2 |
| Korea Machinery Ind. Inc. | 2 |
2 |
| Adachi Construction Industry Co. Ltd. | 3 |
1 |
| AIRVAC Inc | 9 |
1 |
| A.Y. McDonald Mfg. Co. | 11 |
1 |
| Canplas Industries Ltd. | 89 |
1 |
| Connaught Lithoservices Ltd | 2 |
1 |
| Easy Sanitary Solutions B.V. | 47 |
1 |
| Flex-Seal Couplings Limited | 3 |
1 |
| Fluid Handling LLC | 245 |
1 |
| Intelligent Environmental Systems B.V. | 1 |
1 |
| JL Industries, Inc. | 11 |
1 |
| Kansei Company | 6 |
1 |
| McAlpine & Co Limited | 51 |
1 |
| Other owners | 29 |