- 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: 1578
10-year publication summary
|
86
|
79
|
114
|
108
|
99
|
91
|
105
|
103
|
121
|
25
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4213 |
205 |
| The Lubrizol Corporation | 1257 |
174 |
| Chevron Oronite Company LLC | 601 |
112 |
| ExxonMobil Research And Engineering Company | 2465 |
81 |
| Afton Chemical Corporation | 493 |
69 |
| JX Nippon Oil & Energy Corporation | 978 |
69 |
| Infineum International Limited | 431 |
66 |
| Totalenergies Onetech | 1492 |
55 |
| Total Marketing Services | 447 |
47 |
| Shell Internationale Research Maatschappij B.V. | 3456 |
39 |
| ENEOS Corporation | 669 |
35 |
| Adeka Corporation | 1365 |
29 |
| Chevron Japan Ltd. | 98 |
23 |
| ExxonMobil Chemical Patents Inc. | 3822 |
21 |
| JXTG Nippon Oil & Energy Corporation | 323 |
20 |
| BASF SE | 21150 |
19 |
| Shell Oil Company | 2091 |
17 |
| Dow Global Technologies LLC | 10812 |
17 |
| Chevron U.S.A. Inc. | 4094 |
16 |
| Mitsui Chemicals, Inc. | 3220 |
16 |
| Other owners | 448 |