- 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: 1618
10-year publication summary
|
86
|
79
|
114
|
108
|
99
|
91
|
105
|
104
|
135
|
61
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4257 |
205 |
| The Lubrizol Corporation | 1259 |
179 |
| Chevron Oronite Company LLC | 598 |
117 |
| Infineum International Limited | 454 |
81 |
| ExxonMobil Research And Engineering Company | 2400 |
79 |
| Afton Chemical Corporation | 499 |
73 |
| JX Nippon Oil & Energy Corporation | 978 |
69 |
| Totalenergies Onetech | 1541 |
55 |
| Total Marketing Services | 449 |
47 |
| ENEOS Corporation | 701 |
40 |
| Shell Internationale Research Maatschappij B.V. | 3394 |
37 |
| Adeka Corporation | 1380 |
28 |
| Chevron Japan Ltd. | 97 |
23 |
| ExxonMobil Chemical Patents Inc. | 3768 |
21 |
| JXTG Nippon Oil & Energy Corporation | 323 |
20 |
| BASF SE | 21306 |
19 |
| ExxonMobil Technology and Engineering Company | 1379 |
18 |
| Shell Oil Company | 2068 |
17 |
| Dow Global Technologies LLC | 10994 |
17 |
| Mitsui Chemicals, Inc. | 3259 |
17 |
| Other owners | 456 |