- All sections
- C - Chemistrymetallurgy
- C10N - Indexing scheme associated with subclass
- C10N 40/25 - Internal-combustion engines
Patent holdings for IPC class C10N 40/25
Total number of patents in this class: 1543
10-year publication summary
|
62
|
86
|
79
|
113
|
108
|
99
|
91
|
92
|
90
|
102
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4237 |
205 |
| The Lubrizol Corporation | 1290 |
176 |
| Chevron Oronite Company LLC | 573 |
99 |
| ExxonMobil Research And Engineering Company | 2562 |
83 |
| JX Nippon Oil & Energy Corporation | 999 |
69 |
| Afton Chemical Corporation | 487 |
61 |
| Infineum International Limited | 400 |
57 |
| Totalenergies Onetech | 1377 |
51 |
| Total Marketing Services | 453 |
47 |
| Shell Internationale Research Maatschappij B.V. | 3557 |
40 |
| ENEOS Corporation | 624 |
34 |
| Adeka Corporation | 1365 |
29 |
| ExxonMobil Chemical Patents Inc. | 3974 |
21 |
| Chevron Japan Ltd. | 97 |
21 |
| JXTG Nippon Oil & Energy Corporation | 323 |
20 |
| BASF SE | 21017 |
19 |
| Shell Oil Company | 2138 |
17 |
| Dow Global Technologies LLC | 10437 |
17 |
| Chevron U.S.A. Inc. | 3996 |
16 |
| Nippon Oil Corporation | 278 |
16 |
| Other owners | 445 |