- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 29/14 - Shaft sealings operative only when pump is inoperative
Patent holdings for IPC class F04D 29/14
Total number of patents in this class: 35
10-year publication summary
|
2
|
0
|
5
|
2
|
3
|
2
|
0
|
1
|
2
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 9042 |
3 |
| Ebara Corporation | 2278 |
3 |
| Sulzer Management AG | 697 |
3 |
| Tyco Fire & Security GmbH | 3602 |
3 |
| Westinghouse Electric Company LLC | 1185 |
3 |
| Nuovo Pignone Tecnologie S.r.l. | 1168 |
3 |
| Areva NP | 202 |
2 |
| Aisin Seiki Kabushiki Kaisha | 2172 |
1 |
| Hamilton Sundstrand Corporation | 5018 |
1 |
| A.R. Wilfley & Sons, Inc. | 9 |
1 |
| China Nuclear Power Engineering Co., Ltd. | 288 |
1 |
| ebm-papst Landshut GmbH | 87 |
1 |
| Electricite de France | 749 |
1 |
| GE-Hitachi Nuclear Energy Americas LLC | 446 |
1 |
| Jilin University | 291 |
1 |
| Linde Aktiengesellschaft | 1432 |
1 |
| Pierburg GmbH | 477 |
1 |
| Tetra Laval Holdings & Finance S.A. | 2198 |
1 |
| Weir Minerals Africa (Proprietary) Limited | 4 |
1 |
| Weir Minerals Australia, Ltd. | 308 |
1 |
| Other owners | 2 |