- 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: 1441
10-year publication summary
|
61
|
57
|
75
|
114
|
104
|
91
|
83
|
77
|
89
|
72
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4224 |
304 |
| JX Nippon Oil & Energy Corporation | 999 |
101 |
| ExxonMobil Research And Engineering Company | 2570 |
54 |
| The Lubrizol Corporation | 1288 |
46 |
| Kyodo Yushi Co., Ltd. | 241 |
42 |
| ENEOS Corporation | 618 |
42 |
| Shell Internationale Research Maatschappij B.V. | 3548 |
39 |
| JXTG Nippon Oil & Energy Corporation | 323 |
37 |
| NTN Corporation | 4973 |
32 |
| Mitsui Chemicals, Inc. | 3222 |
25 |
| Totalenergies Onetech | 1343 |
22 |
| ExxonMobil Technology and Engineering Company | 1079 |
20 |
| Infineum International Limited | 396 |
18 |
| Chevron U.S.A. Inc. | 3967 |
17 |
| Afton Chemical Corporation | 484 |
17 |
| Shell Oil Company | 2138 |
16 |
| ExxonMobil Chemical Patents Inc. | 3977 |
16 |
| Dow Global Technologies LLC | 10360 |
16 |
| Saudi Arabian Oil Company | 13224 |
16 |
| BASF SE | 20940 |
15 |
| Other owners | 546 |