- 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 3/00 - Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
Patent holdings for IPC class C09C 3/00
Total number of patents in this class: 329
10-year publication summary
|
28
|
7
|
19
|
15
|
10
|
15
|
20
|
32
|
36
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| PPG Industries Ohio, Inc. | 3430 |
10 |
| Omya International AG | 816 |
9 |
| Nalco Company | 620 |
7 |
| BASF SE | 19740 |
6 |
| Cqv Co., Ltd. | 70 |
6 |
| ECKART GmbH | 331 |
6 |
| E. I. du Pont de Nemours and Company | 4345 |
5 |
| Toyo Aluminium Kabushiki Kaisha | 357 |
5 |
| 3m Innovative Properties Company | 18406 |
4 |
| Merck Patent GmbH | 5909 |
4 |
| Hewlett-Packard Development Company, L.P. | 28538 |
4 |
| ALPHA Calcit Fullstoff Gesellschaft mbH | 15 |
4 |
| The Chemours Company Fc, LLC | 1107 |
4 |
| Lanxess Deutschland GmbH | 1104 |
4 |
| Wacker Chemie AG | 2091 |
4 |
| Samsung Display Co., Ltd. | 30585 |
3 |
| The Regents of the University of California | 18943 |
3 |
| BASF Coatings GmbH | 1128 |
3 |
| CertainTeed Corporation | 299 |
3 |
| Croda International plc | 553 |
3 |
| Other owners | 232 |