- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 3/02 - Apparatus therefor
Patent holdings for IPC class C22B 3/02
Total number of patents in this class: 432
10-year publication summary
|
51
|
29
|
39
|
27
|
43
|
43
|
28
|
21
|
41
|
19
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Outotec (Finland) Oy | 491 |
36 |
| Metso Outotec Finland Oy | 795 |
25 |
| Freeport Minerals Corporation | 80 |
21 |
| FLSmidth A/S | 923 |
14 |
| China ENFI Engineering Corp. | 91 |
12 |
| CPS Technology Holdings LLC | 652 |
9 |
| Hatch Ltd. | 219 |
8 |
| Metso Minerals Oy | 152 |
8 |
| Cidra Corporate Services, LLC | 91 |
7 |
| Outotec Oyj | 318 |
7 |
| Technological Resources Pty. Limited | 444 |
7 |
| Differential Engineering Inc. | 10 |
6 |
| Sumitomo Metal Mining Co., Ltd. | 1670 |
6 |
| Battelle Memorial Institute | 2356 |
5 |
| BASF SE | 19740 |
4 |
| CDA Research Group, Inc. | 32 |
4 |
| Shibaura Institute of Technology | 92 |
4 |
| Worcester Polytechnic Institute | 438 |
4 |
| Primobius GmbH | 6 |
4 |
| Clene Nanomedicine, Inc. | 32 |
3 |
| Other owners | 238 |