- All sections
- C - Chemistrymetallurgy
- C21D - Modifying the physical structure of ferrous metalsgeneral devices for heat treatment of ferrous or non-ferrous metals or alloysmaking metal malleable, e.g. by decarburisation or tempering
- C21D 7/08 - Modifying the physical properties of iron or steel by deformation by cold working of the surface by burnishing or the like
Patent holdings for IPC class C21D 7/08
Total number of patents in this class: 66
10-year publication summary
|
10
|
5
|
5
|
4
|
7
|
1
|
4
|
1
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9332 |
9 |
| Bayerische Motoren Werke Aktiengesellschaft | 14278 |
4 |
| Rolls-Royce Deutschland Ltd & Co KG | 814 |
4 |
| Technische Universitat Munchen | 686 |
4 |
| Robert Bosch GmbH | 42632 |
2 |
| ZF Friedrichshafen AG | 7133 |
2 |
| Hamilton Sundstrand Corporation | 4853 |
2 |
| Purdue Research Foundation | 3583 |
2 |
| Aktiebolaget SKF | 2937 |
2 |
| Fuji Kihan Co., Ltd. | 25 |
2 |
| General Electric Company | 13811 |
1 |
| Siemens AG | 24520 |
1 |
| The Boeing Company | 20042 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8694 |
1 |
| United Technologies Corporation | 2247 |
1 |
| Airbus Operations GmbH | 3332 |
1 |
| Hitachi, Ltd. | 15459 |
1 |
| GM Global Technology Operations LLC | 14968 |
1 |
| Caterpillar Inc. | 9530 |
1 |
| Schaeffler Technologies AG & Co. KG | 9818 |
1 |
| Other owners | 23 |