- All sections
- C - Chemistrymetallurgy
- C10N - Indexing scheme associated with subclass
- C10N 20/02 - ViscosityViscosity index
Patent holdings for IPC class C10N 20/02
Total number of patents in this class: 1518
10-year publication summary
|
57
|
75
|
114
|
104
|
91
|
84
|
81
|
96
|
115
|
56
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4275 |
299 |
| JX Nippon Oil & Energy Corporation | 978 |
101 |
| The Lubrizol Corporation | 1261 |
49 |
| ENEOS Corporation | 711 |
49 |
| ExxonMobil Research And Engineering Company | 2392 |
48 |
| Kyodo Yushi Co., Ltd. | 249 |
46 |
| Shell Internationale Research Maatschappij B.V. | 3390 |
38 |
| JXTG Nippon Oil & Energy Corporation | 323 |
37 |
| ExxonMobil Technology and Engineering Company | 1405 |
36 |
| NTN Corporation | 4925 |
34 |
| Mitsui Chemicals, Inc. | 3267 |
27 |
| Totalenergies Onetech | 1546 |
27 |
| Infineum International Limited | 454 |
24 |
| Afton Chemical Corporation | 499 |
20 |
| Dow Global Technologies LLC | 11051 |
19 |
| Chevron Oronite Company LLC | 603 |
18 |
| Shell USA, Inc. | 1351 |
18 |
| Chevron U.S.A. Inc. | 4170 |
17 |
| Shell Oil Company | 2064 |
16 |
| ExxonMobil Chemical Patents Inc. | 3762 |
16 |
| Other owners | 579 |