- All sections
- E - Fixed constructions
- E01D - Bridges
- E01D 19/12 - Grating or flooring for bridgesFastening railway sleepers or tracks to bridges
Patent holdings for IPC class E01D 19/12
Total number of patents in this class: 208
10-year publication summary
|
18
|
15
|
22
|
11
|
36
|
24
|
21
|
23
|
10
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Composites Intellectual Holdings, Inc. | 25 |
9 |
| Contech Engineered Solutions LLC | 278 |
4 |
| Hunan University | 149 |
4 |
| Vigor Industrial LLC | 10 |
4 |
| PERI SE | 411 |
4 |
| Inquik IP Holdings Pty Ltd | 11 |
4 |
| Alumabridge, LLC | 4 |
3 |
| FiberCore IP B.V. | 26 |
3 |
| IHI Corporation | 3414 |
3 |
| Lewis Bolt & Nut Company | 22 |
3 |
| Nippon Steel Engineering Co., Ltd. | 205 |
3 |
| SYSTRA | 16 |
3 |
| Kollegger GmbH | 8 |
3 |
| Summit Precast Concrete LP | 6 |
3 |
| Sumitomo Electric Industries, Ltd. | 15414 |
2 |
| Asahi Engineering Co., Ltd. | 7 |
2 |
| Astra Capital Incorporated | 38 |
2 |
| BYD Company Limited | 4941 |
2 |
| Ecoform Pty Ltd | 11 |
2 |
| Fuzhou University | 313 |
2 |
| Other owners | 143 |