- 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: 288
10-year publication summary
|
18
|
19
|
15
|
9
|
26
|
25
|
22
|
22
|
25
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Cabot Corporation | 551 |
8 |
| Daicel Corporation | 2338 |
7 |
| National Research Council of Canada | 1552 |
7 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 370 |
6 |
| Carbon Technology Holdings, LLC | 211 |
6 |
| Evonik Carbon Black GmbH | 30 |
5 |
| PPG Industries Ohio, Inc. | 3460 |
5 |
| Monolith Materials, Inc. | 125 |
5 |
| Xerox Corporation | 7014 |
4 |
| Kansai Paint Co., Ltd. | 664 |
4 |
| Pirelli Tyre S.p.A. | 1916 |
4 |
| Samsung Electronics Co., Ltd. | 145864 |
3 |
| The Board of Trustees of the Leland Stanford Junior University | 6402 |
3 |
| Lawrence Livermore National Security, LLC | 1934 |
3 |
| Gates Corporation | 1154 |
3 |
| Mitsubishi Pencil Company, Limited | 757 |
3 |
| Molecular Rebar Design, LLC | 75 |
3 |
| Politecnico di Milano | 847 |
3 |
| SANYO Trading Co., Ltd. | 21 |
3 |
| Toyocolor Co., Ltd. | 217 |
3 |
| Other owners | 200 |