- All sections
- C - Chemistrymetallurgy
- C10N - Indexing scheme associated with subclass
- C10N 40/20 - Metal working
Patent holdings for IPC class C10N 40/20
Total number of patents in this class: 330
10-year publication summary
|
8
|
13
|
24
|
19
|
22
|
29
|
22
|
25
|
22
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4103 |
69 |
| The Lubrizol Corporation | 1313 |
15 |
| FUJIFILM Corporation | 28805 |
10 |
| Dow Global Technologies LLC | 10156 |
10 |
| Totalenergies Onetech | 1116 |
10 |
| JX Nippon Oil & Energy Corporation | 1010 |
9 |
| BASF SE | 20432 |
8 |
| Adeka Corporation | 1342 |
8 |
| Kyodo Yushi Co., Ltd. | 230 |
6 |
| Nippon Oil Corporation | 308 |
6 |
| Castrol Limited | 529 |
5 |
| NOK Corporation | 2166 |
5 |
| ENEOS Corporation | 584 |
5 |
| Henkel AG & Co. KGaA | 10351 |
4 |
| Chemetall US, Inc. | 28 |
4 |
| Chemische Fabrik Budenheim KG | 219 |
4 |
| Kyowa Hakko Chemical Co., Ltd. | 31 |
4 |
| Mitsubishi Gas Chemical Company, Inc. | 3343 |
4 |
| Kao Corporation | 4916 |
3 |
| Showa Denko K.K. | 2337 |
3 |
| Other owners | 138 |