- All sections
- B - Performing operationstransporting
- B63B - Ships or other waterborne vesselsequipment for shipping
- B63B 21/18 - Stoppers for anchor chains
Patent holdings for IPC class B63B 21/18
Total number of patents in this class: 111
10-year publication summary
|
11
|
15
|
1
|
10
|
7
|
3
|
6
|
7
|
7
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bardex Corporation | 51 |
11 |
| Flintstone Technology Limited | 30 |
6 |
| Nov-blm | 20 |
6 |
| Balltec Limited | 31 |
5 |
| Kongsberg Maritime AS | 117 |
5 |
| Korea Institute of Ocean Science & Technology | 420 |
5 |
| Dhmc Co., Ltd. | 8 |
5 |
| Koms Inc. | 8 |
5 |
| Single Buoy Moorings Inc. | 320 |
4 |
| Subsea 7 Limited | 221 |
4 |
| Seasystems AS | 10 |
4 |
| Naval Energies | 39 |
3 |
| Bluewater Energy Services B.V. | 66 |
2 |
| Controle Mesure Regulation | 4 |
2 |
| I.P. Huse AS | 6 |
2 |
| National Oilwell Varco Norway AS | 107 |
2 |
| SOFEC, Inc. | 97 |
2 |
| Promor Pte Ltd | 4 |
2 |
| The United States of America as represented by the Secretary of the Navy | 2760 |
1 |
| Acergy France SAS | 129 |
1 |
| Other owners | 34 |