- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 31/04 - Graphite
Patent holdings for IPC class C01B 31/04
Total number of patents in this class: 1793
10-year publication summary
|
402
|
350
|
120
|
21
|
7
|
6
|
3
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kaneka Corporation | 4445 |
61 |
| Samsung Electronics Co., Ltd. | 131630 |
33 |
| Global Graphene Group, Inc. | 246 |
29 |
| Showa Denko K.K. | 2539 |
24 |
| BASF SE | 19740 |
23 |
| Sekisui Chemical Co., Ltd. | 3159 |
22 |
| Toyo Tanso Co., Ltd. | 227 |
22 |
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1657 |
20 |
| National University of Singapore | 2228 |
19 |
| Massachusetts Institute of Technology | 9795 |
17 |
| William Marsh Rice University | 937 |
17 |
| JX Nippon Oil & Energy Corporation | 1019 |
16 |
| The Regents of the University of California | 18943 |
14 |
| Empire Technology Development LLC | 1636 |
14 |
| The University of Manchester | 456 |
14 |
| Mitsubishi Chemical Corporation | 4313 |
13 |
| Centre National de La Recherche Scientifique | 9632 |
12 |
| The Trustees of Princeton University | 1129 |
12 |
| Versarien PLC | 53 |
12 |
| Northwestern University | 3112 |
11 |
| Other owners | 1388 |