- 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: 1502
10-year publication summary
|
57
|
75
|
114
|
104
|
91
|
84
|
81
|
96
|
115
|
35
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4234 |
298 |
| JX Nippon Oil & Energy Corporation | 978 |
101 |
| The Lubrizol Corporation | 1249 |
49 |
| ExxonMobil Research And Engineering Company | 2425 |
48 |
| ENEOS Corporation | 685 |
47 |
| Kyodo Yushi Co., Ltd. | 249 |
46 |
| Shell Internationale Research Maatschappij B.V. | 3409 |
39 |
| JXTG Nippon Oil & Energy Corporation | 323 |
37 |
| NTN Corporation | 4915 |
33 |
| ExxonMobil Technology and Engineering Company | 1349 |
31 |
| Mitsui Chemicals, Inc. | 3242 |
27 |
| Totalenergies Onetech | 1530 |
26 |
| Infineum International Limited | 456 |
24 |
| Dow Global Technologies LLC | 10930 |
19 |
| Afton Chemical Corporation | 492 |
19 |
| Chevron U.S.A. Inc. | 4134 |
17 |
| Chevron Oronite Company LLC | 595 |
17 |
| Shell USA, Inc. | 1312 |
17 |
| Shell Oil Company | 2075 |
16 |
| ExxonMobil Chemical Patents Inc. | 3786 |
16 |
| Other owners | 575 |