- All sections
- E - Fixed constructions
- E03F - Sewers; cesspools
- E03F 3/00 - Sewer pipe-line systems
Patent holdings for IPC class E03F 3/00
Total number of patents in this class: 39
10-year publication summary
|
6
|
6
|
3
|
6
|
1
|
3
|
1
|
3
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Essential Water LLC | 4 |
2 |
| Gulf Coast Underground, LLC | 6 |
2 |
| Uhrig Kanaltechnik GmbH | 11 |
2 |
| Aiwell Holding AS | 6 |
2 |
| Dow Global Technologies LLC | 10143 |
1 |
| ABT Foam, LLC | 4 |
1 |
| ADS LLC | 40 |
1 |
| Clearford Industries Inc. | 5 |
1 |
| Contech Engineering Solutions LLC | 1 |
1 |
| Frankische Rohrwerke Gebr. Kirchner GmbH & Co. KG | 73 |
1 |
| Huahan Science & Technology Co., Ltd. | 16 |
1 |
| iPEK International GmbH | 27 |
1 |
| I.s.t. Innovative Sewer Technologies GmbH | 9 |
1 |
| LMK Technologies, LLC | 109 |
1 |
| Presby Patent Trust | 9 |
1 |
| Sanexen Environmental Services Inc. | 41 |
1 |
| Sekisui Chemical Co., Ltd. | 3303 |
1 |
| Tohoku University | 2678 |
1 |
| Veolia Eau - Compagnie Generale des Eaux | 34 |
1 |
| Xylem Water Solutions Zelienople LLC | 79 |
1 |
| Other owners | 15 |