- All sections
- E - Fixed constructions
- E02D - Foundationsexcavationsembankmentsunderground or underwater structures
- E02D 29/14 - Covers for manholes or the likeFrames for covers
Patent holdings for IPC class E02D 29/14
Total number of patents in this class: 553
10-year publication summary
|
73
|
54
|
54
|
48
|
44
|
47
|
40
|
45
|
30
|
21
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hubbell Incorporated | 3423 |
29 |
| EJ EMEA | 40 |
17 |
| Neenah Foundry Company | 40 |
16 |
| ACO Severin Ahlmann GmbH & Co. KG | 91 |
15 |
| Saint-Gobain Pam | 67 |
14 |
| Sewer Sentry LLC | 15 |
13 |
| EJ USA, Inc. | 23 |
12 |
| Channell Commercial Corporation | 92 |
11 |
| Novinium, LLC | 102 |
10 |
| Norinco | 13 |
9 |
| Nippon Telegraph and Telephone Corporation | 15935 |
7 |
| Canada Pipe Company ULC | 47 |
7 |
| East Jordan Iron Works, Inc. | 12 |
6 |
| Oldcastle Infrastructure, Inc. | 98 |
6 |
| Core Cap | 10 |
6 |
| Mueller International, LLC | 740 |
5 |
| Press-seal Corporation | 42 |
5 |
| Rooftop Anchor, Inc. | 19 |
5 |
| Wrekin Holdings Limited | 5 |
5 |
| ACO Ahlmann SE & Co. KG | 313 |
5 |
| Other owners | 350 |