- 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 1/56 - Treatment of carbon black
Patent holdings for IPC class C09C 1/56
Total number of patents in this class: 421
10-year publication summary
|
25
|
29
|
28
|
34
|
23
|
29
|
24
|
29
|
20
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cabot Corporation | 575 |
55 |
| Tokai Carbon Co., Ltd. | 99 |
19 |
| Monolith Materials, Inc. | 112 |
16 |
| Suncoal Industries GmbH | 65 |
10 |
| Landa Labs (2012) Ltd. | 131 |
9 |
| Denka Company Limited | 2189 |
7 |
| Tesla Nanocoatings, Inc. | 33 |
7 |
| E. I. du Pont de Nemours and Company | 4345 |
6 |
| Evonik Carbon Black GmbH | 32 |
6 |
| Konica Minolta Business Technologies, Inc. | 1564 |
6 |
| e Ink Corporation | 1411 |
6 |
| Archer Daniels Midland Company | 1164 |
5 |
| Continental Carbon Company | 7 |
5 |
| OCI Company Ltd. | 131 |
5 |
| Orion Engineered Carbons GmbH | 57 |
5 |
| Pirelli Tyre S.p.A. | 1832 |
5 |
| Politecnico di Milano | 790 |
5 |
| BASF SE | 19740 |
4 |
| Honda Motor Co., Ltd. | 24537 |
4 |
| Canon Inc. | 36841 |
4 |
| Other owners | 232 |