- All sections
- E - Fixed constructions
- E03F - Sewerscesspools
- E03F 5/02 - Manhole shafts or other inspection chambersSnow-filling openingsAccessories
Patent holdings for IPC class E03F 5/02
Total number of patents in this class: 152
10-year publication summary
|
10
|
12
|
13
|
19
|
22
|
13
|
12
|
13
|
18
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Advanced Drainage Systems, Inc. | 402 |
8 |
| Wavin B.V. | 167 |
8 |
| Infiltrator Water Technologies, LLC | 53 |
6 |
| LMK Technologies, LLC | 99 |
5 |
| S&M Precast Inc. | 7 |
5 |
| Aiwell Holding AS | 7 |
5 |
| Nippon Telegraph and Telephone Corporation | 15923 |
4 |
| Press-seal Corporation | 44 |
4 |
| Resinating LLC | 7 |
4 |
| Momentum Environmental, LLC | 4 |
3 |
| Sewer Sentry LLC | 15 |
3 |
| Bingham & Taylor LLC | 9 |
3 |
| Aero-stream, LLC | 16 |
2 |
| BFS Betonfertigteilesysteme GmbH | 6 |
2 |
| Jerry L. McKinney 2002 Trust | 4 |
2 |
| Liverpool John Moores University | 45 |
2 |
| Rehau AG + Co | 354 |
2 |
| Sika Technology Limited | 3 |
2 |
| South East Water Corporation | 48 |
2 |
| Independence Materials Group, LLC | 89 |
2 |
| Other owners | 78 |