- All sections
- C - Chemistry; metallurgy
- 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: 300
10-year publication summary
|
14
|
8
|
13
|
24
|
19
|
21
|
29
|
21
|
19
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 3995 |
66 |
| The Lubrizol Corporation | 1335 |
15 |
| FUJIFILM Corporation | 27102 |
10 |
| JX Nippon Oil & Energy Corporation | 1019 |
9 |
| BASF SE | 19740 |
8 |
| Dow Global Technologies LLC | 10147 |
8 |
| Adeka Corporation | 1333 |
8 |
| Kyodo Yushi Co., Ltd. | 224 |
6 |
| Nippon Oil Corporation | 340 |
6 |
| Castrol Limited | 520 |
5 |
| ENEOS Corporation | 611 |
5 |
| Totalenergies Onetech | 536 |
5 |
| Chemetall US, Inc. | 24 |
4 |
| Kyowa Hakko Chemical Co., Ltd. | 44 |
4 |
| NOK Corporation | 2108 |
4 |
| Kao Corporation | 4843 |
3 |
| Showa Denko K.K. | 2539 |
3 |
| Henkel AG & Co. KGaA | 10129 |
3 |
| Chemische Fabrik Budenheim KG | 229 |
3 |
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
3 |
| Other owners | 122 |