- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 3/08 - Sulfuric acid
Patent holdings for IPC class C22B 3/08
Total number of patents in this class: 683
10-year publication summary
39
|
70
|
55
|
45
|
46
|
65
|
47
|
59
|
103
|
34
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Metal Mining Co., Ltd. | 1670 |
76 |
JX Nippon Mining & Metals Corporation | 1576 |
21 |
Jetti Resources, LLC | 30 |
17 |
Umicore | 542 |
16 |
BASF SE | 19740 |
13 |
BHP Billiton SSM Development Pty Ltd. | 30 |
12 |
Korea Zinc Co., Ltd. | 41 |
11 |
Technological Resources Pty. Limited | 444 |
10 |
Nemaska Lithium Inc. | 69 |
9 |
Sherritt International Corporation | 30 |
9 |
The University of British Columbia | 1432 |
9 |
Ecopro Materials, Co., Ltd. | 17 |
9 |
Outotec Oyj | 318 |
8 |
FLSmidth A/S | 923 |
8 |
Metso Outotec Finland Oy | 795 |
8 |
BHP Billiton Innovation Pty Ltd. | 29 |
7 |
Korea Institute of Geoscience and Mineral Resources | 222 |
7 |
Li-technology Pty Ltd | 14 |
6 |
Central South University | 364 |
5 |
Iluka Resources Limited | 32 |
5 |
Other owners | 417 |