- All sections
- B - Performing operations; transporting
- B22C - Foundry moulding
- B22C 9/04 - Use of lost patterns
Patent holdings for IPC class B22C 9/04
Total number of patents in this class: 644
10-year publication summary
|
63
|
71
|
68
|
53
|
56
|
35
|
31
|
22
|
31
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9069 |
94 |
| Safran Aircraft Engines | 6021 |
73 |
| General Electric Company | 17801 |
44 |
| GE Infrastructure Technology, LLC | 6103 |
19 |
| SAFRAN S.A. | 567 |
16 |
| Siemens AG | 24575 |
15 |
| SNECMA S.A. | 1152 |
13 |
| Metal Casting Technology, Inc. | 20 |
13 |
| Hitchiner Manufacturing Co., Inc. | 28 |
12 |
| Snecma | 1065 |
10 |
| Siemens Energy, Inc. | 1737 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 8504 |
7 |
| Rolls-Royce PLC | 2976 |
7 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
7 |
| Topgolf Callaway Brands Corp. | 1942 |
7 |
| 3m Innovative Properties Company | 17968 |
6 |
| Honeywell International Inc. | 14009 |
6 |
| Mikro Systems, Inc. | 56 |
6 |
| Mitsubishi Hitachi Power Systems, Ltd. | 996 |
6 |
| Peugeot Citroen Automobiles SA | 1845 |
5 |
| Other owners | 269 |