- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 31/04 - Graphite
Patent holdings for IPC class C01B 31/04
Total number of patents in this class: 1744
10-year publication summary
|
350
|
120
|
21
|
7
|
6
|
3
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kaneka Corporation | 4484 |
54 |
| Samsung Electronics Co., Ltd. | 144426 |
33 |
| Global Graphene Group, Inc. | 247 |
29 |
| BASF SE | 20803 |
23 |
| Showa Denko K.K. | 2269 |
23 |
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1769 |
20 |
| Sekisui Chemical Co., Ltd. | 3378 |
20 |
| Toyo Tanso Co., Ltd. | 224 |
20 |
| National University of Singapore | 2431 |
18 |
| Massachusetts Institute of Technology | 10019 |
17 |
| JX Nippon Oil & Energy Corporation | 999 |
16 |
| William Marsh Rice University | 1002 |
16 |
| Empire Technology Development LLC | 1620 |
14 |
| The University of Manchester | 454 |
14 |
| The Regents of the University of California | 19839 |
13 |
| Mitsubishi Chemical Corporation | 4492 |
13 |
| Centre National de La Recherche Scientifique | 10350 |
12 |
| The Trustees of Princeton University | 1199 |
12 |
| Northwestern University | 3366 |
11 |
| Nanyang Technological University | 1982 |
11 |
| Other owners | 1355 |