- All sections
- C - Chemistrymetallurgy
- C09C - Treatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling propertiespreparation of carbon black
- C09C 1/44 - Carbon
Patent holdings for IPC class C09C 1/44
Total number of patents in this class: 297
10-year publication summary
|
14
|
18
|
15
|
7
|
18
|
23
|
16
|
18
|
25
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cabot Corporation | 558 |
8 |
| Daicel Corporation | 2387 |
7 |
| National Research Council of Canada | 1556 |
7 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 373 |
6 |
| Carbon Technology Holdings, LLC | 216 |
6 |
| Evonik Carbon Black GmbH | 30 |
5 |
| PPG Industries Ohio, Inc. | 3435 |
5 |
| Monolith Materials, Inc. | 123 |
5 |
| Xerox Corporation | 6982 |
4 |
| Kansai Paint Co., Ltd. | 671 |
4 |
| Mitsubishi Pencil Company, Limited | 767 |
4 |
| Molecular Rebar Design, LLC | 76 |
4 |
| Pirelli Tyre S.p.A. | 1925 |
4 |
| Samsung Electronics Co., Ltd. | 148077 |
3 |
| The Board of Trustees of the Leland Stanford Junior University | 6494 |
3 |
| Lawrence Livermore National Security, LLC | 1941 |
3 |
| Gates Corporation | 1156 |
3 |
| Politecnico di Milano | 857 |
3 |
| SANYO Trading Co., Ltd. | 21 |
3 |
| Toyocolor Co., Ltd. | 225 |
3 |
| Other owners | 207 |