- All sections
- E - Fixed constructions
- E01C - Construction of, or surfaces for, roads, sports grounds, or the likemachines or auxiliary tools for construction or repair
- E01C 11/22 - GuttersKerbs
Patent holdings for IPC class E01C 11/22
Total number of patents in this class: 358
10-year publication summary
|
24
|
27
|
45
|
41
|
45
|
41
|
29
|
41
|
32
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ACO Severin Ahlmann GmbH & Co. KG | 103 |
16 |
| Pierburg GmbH | 469 |
13 |
| ABT, Inc. | 96 |
12 |
| Brock USA, LLC | 57 |
8 |
| The Boeing Company | 20057 |
6 |
| Washington State University | 484 |
6 |
| Keystone Retaining Wall Systems LLC | 219 |
5 |
| Strata Innovations Pty Limited | 44 |
5 |
| Zurn Water, LLC | 235 |
5 |
| Shaw & Sons, Inc. | 39 |
4 |
| TenCate Grass Holding B.V. | 25 |
4 |
| Vertedge Limited | 11 |
4 |
| The United States of America as represented by the Secretary of the Navy | 2751 |
3 |
| Campbell-ERS L.L.C. | 6 |
3 |
| Colas | 162 |
3 |
| Holcim Technology Ltd. | 989 |
3 |
| James A. Alfieri, III | 4 |
3 |
| Oxford Plastic Systems Limited | 40 |
3 |
| PermaLoc Corporation | 21 |
3 |
| Profilbeton GmbH | 8 |
3 |
| Other owners | 246 |