- 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: 64
10-year publication summary
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5
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5
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4
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7
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1
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4
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1
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1
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1
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10102 |
9 |
| Bayerische Motoren Werke Aktiengesellschaft | 15272 |
4 |
| Rolls-Royce Deutschland Ltd & Co KG | 858 |
4 |
| Technische Universitat Munchen | 711 |
4 |
| Robert Bosch GmbH | 44160 |
2 |
| ZF Friedrichshafen AG | 7238 |
2 |
| Hamilton Sundstrand Corporation | 5015 |
2 |
| Purdue Research Foundation | 3916 |
2 |
| Aktiebolaget SKF | 3128 |
2 |
| Fuji Kihan Co., Ltd. | 24 |
2 |
| General Electric Company | 13899 |
1 |
| Siemens AG | 24029 |
1 |
| The Boeing Company | 20160 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 9128 |
1 |
| United Technologies Corporation | 2220 |
1 |
| Airbus Operations GmbH | 3446 |
1 |
| Hitachi, Ltd. | 16094 |
1 |
| GM Global Technology Operations LLC | 16124 |
1 |
| Caterpillar Inc. | 10267 |
1 |
| Schaeffler Technologies AG & Co. KG | 10968 |
1 |
| Other owners | 21 |