- 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: 1493
10-year publication summary
|
57
|
75
|
114
|
104
|
91
|
83
|
81
|
92
|
108
|
23
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4219 |
296 |
| JX Nippon Oil & Energy Corporation | 978 |
101 |
| ExxonMobil Research And Engineering Company | 2468 |
52 |
| The Lubrizol Corporation | 1257 |
48 |
| Kyodo Yushi Co., Ltd. | 251 |
46 |
| ENEOS Corporation | 666 |
46 |
| Shell Internationale Research Maatschappij B.V. | 3462 |
40 |
| JXTG Nippon Oil & Energy Corporation | 323 |
37 |
| NTN Corporation | 4933 |
32 |
| ExxonMobil Technology and Engineering Company | 1275 |
31 |
| Mitsui Chemicals, Inc. | 3217 |
27 |
| Totalenergies Onetech | 1486 |
26 |
| Infineum International Limited | 427 |
22 |
| Dow Global Technologies LLC | 10770 |
18 |
| Afton Chemical Corporation | 492 |
18 |
| Chevron U.S.A. Inc. | 4081 |
17 |
| Shell Oil Company | 2094 |
16 |
| ExxonMobil Chemical Patents Inc. | 3828 |
16 |
| Chevron Oronite Company LLC | 596 |
16 |
| Saudi Arabian Oil Company | 13949 |
16 |
| Other owners | 572 |