- All sections
- E - Fixed constructions
- E01D - Bridges
- E01D 22/00 - Methods or apparatus for repairing or strengthening existing bridges
Patent holdings for IPC class E01D 22/00
Total number of patents in this class: 297
10-year publication summary
|
15
|
19
|
25
|
28
|
34
|
50
|
25
|
30
|
24
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
19 |
| NEC Corporation | 32703 |
18 |
| Paul Kristen, Inc. | 23 |
10 |
| Keiwa Inc. | 150 |
7 |
| Soletanche Freyssinet | 480 |
6 |
| Mitsubishi Electric Corporation | 43934 |
5 |
| Changsha University of Science & Technology | 43 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
4 |
| Southeast University | 1148 |
4 |
| Western Mechanical Electrical Millwright Services Limited | 4 |
4 |
| Nippon Steel Chemical & Material Co., Ltd. | 571 |
4 |
| Seiko Epson Corporation | 18724 |
3 |
| Fast Beam Oy | 12 |
3 |
| IHI Corporation | 3268 |
3 |
| IHI Infrastructure Systems Co., Ltd. | 17 |
3 |
| Moldtech Oy | 3 |
3 |
| Nihon Bisoh Co., Ltd. | 10 |
3 |
| Safway Services, LLC | 29 |
3 |
| Maurer Engineering GmbH | 42 |
3 |
| Revolutionice Inc. | 15 |
3 |
| Other owners | 184 |