- All sections
- E - Fixed constructions
- E01B - Permanent waypermanent-way toolsmachines for making railways of all kinds
- E01B 3/02 - Transverse or longitudinal sleepersOther means resting directly on the ballastway for supporting rails made from wood
Patent holdings for IPC class E01B 3/02
Total number of patents in this class: 4
10-year publication summary
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1
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0
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1
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0
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0
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1
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0
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0
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1
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Encore Rail Systems, Inc. | 19 |
1 |
| Politechnika Warszawska | 87 |
1 |
| Tiebam, Inc | 1 |
1 |
| Hunan Taohuajiang Bamboo Science & Technology Co., Ltd. | 16 |
1 |
| Other owners | 0 |