- All sections
- C - Chemistry; metallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties; preparation of carbon black
- C09C 1/24 - Oxides of iron
Patent holdings for IPC class C09C 1/24
Total number of patents in this class: 347
10-year publication summary
24
|
17
|
50
|
28
|
22
|
17
|
17
|
12
|
13
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Lanxess Deutschland GmbH | 1104 |
50 |
M. Technique Co., Ltd. | 237 |
24 |
BASF SE | 19740 |
12 |
Evonik Degussa GmbH | 1574 |
10 |
The Regents of the University of California | 18943 |
8 |
BASF Corporation | 2039 |
7 |
Sun Chemical Corporation | 865 |
6 |
Merck Patent GmbH | 5909 |
5 |
Toda Kogyo Corporation | 323 |
5 |
Cqv Co., Ltd. | 70 |
4 |
Kobo Products, Inc. | 50 |
4 |
Saint-Gobain Ceramics & Plastics, Inc. | 812 |
4 |
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | 6132 |
4 |
FUJIFILM Corporation | 27102 |
3 |
Rohm and Haas Company | 2805 |
3 |
PPG Industries Ohio, Inc. | 3430 |
3 |
Colorobbia Italia S.p.A. | 48 |
3 |
Croda International plc | 553 |
3 |
Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 354 |
3 |
e Ink Corporation | 1411 |
3 |
Other owners | 183 |