- All sections
- C - Chemistry; metallurgy
- C21D - Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making metal malleable, e.g. by decarburisation or tempering
- C21D 1/767 - Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
Patent holdings for IPC class C21D 1/767
Total number of patents in this class: 60
10-year publication summary
|
5
|
4
|
3
|
5
|
8
|
3
|
1
|
6
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 40953 |
7 |
| ECM Technologies | 29 |
7 |
| Fives Stein | 96 |
3 |
| Ipsen, Inc. | 27 |
3 |
| Ipsen International GmbH | 40 |
3 |
| ThyssenKrupp Steel Europe AG | 924 |
3 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 332 |
2 |
| Ebner Industrieofenbau GmbH | 132 |
2 |
| Gautschi Engineering GmbH | 12 |
2 |
| IHI Corporation | 3268 |
2 |
| IHI Machinery and Furnace Co., Ltd. | 79 |
2 |
| Corning Incorporated | 9932 |
1 |
| ALD Vacuum Technologies GmbH | 138 |
1 |
| ArcelorMittal | 1887 |
1 |
| ArcelorMittal France | 102 |
1 |
| Chugai Ro Co., Ltd. | 124 |
1 |
| Etudes et Constructions Mecaniques | 4 |
1 |
| JFE Steel Corporation | 6067 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
1 |
| Linde Aktiengesellschaft | 1600 |
1 |
| Other owners | 15 |