- All sections
- B - Performing operationstransporting
- B21K - Making forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels
- B21K 3/04 - Making engine or like machine parts not covered by Making propellers or the like blades, e.g. for turbinesUpsetting of blade roots
Patent holdings for IPC class B21K 3/04
Total number of patents in this class: 134
10-year publication summary
|
18
|
6
|
7
|
3
|
5
|
1
|
2
|
2
|
2
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Safran Aircraft Engines | 6294 |
23 |
| Snecma | 1064 |
11 |
| GE Infrastructure Technology, LLC | 6233 |
8 |
| Rtx Corporation | 9410 |
8 |
| Rolls-Royce PLC | 3107 |
7 |
| SNECMA S.A. | 1148 |
5 |
| Hitachi Metals, Ltd. | 1977 |
5 |
| IHI Corporation | 3450 |
4 |
| General Electric Company | 13810 |
3 |
| United Technologies Corporation | 2242 |
3 |
| Pratt & Whitney Canada Corp. | 4793 |
3 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
3 |
| Siemens AG | 24453 |
2 |
| LG Electronics Inc. | 73344 |
2 |
| SAFRAN S.A. | 617 |
2 |
| LM WP Patent Holding A/S | 260 |
2 |
| Endo Manufacturing Co., Ltd. | 5 |
2 |
| Nordex Energy Spain, S.A.U. | 124 |
2 |
| Siemens Gamesa Renewable Energy Innovation & Technology, S.L. | 330 |
2 |
| Institute for Metals Superplasticity Problems of The Russian Academy of Sciences (imsp Ras) | 4 |
2 |
| Other owners | 35 |