- All sections
- C - Chemistry; metallurgy
- C10N - Indexing scheme associated with subclass
- C10N 20/02 - Viscosity; Viscosity index
Patent holdings for IPC class C10N 20/02
Total number of patents in this class: 1363
10-year publication summary
|
61
|
57
|
75
|
114
|
104
|
90
|
79
|
66
|
88
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4106 |
296 |
| JX Nippon Oil & Energy Corporation | 1010 |
101 |
| ExxonMobil Research And Engineering Company | 2675 |
55 |
| The Lubrizol Corporation | 1310 |
43 |
| Shell Internationale Research Maatschappij B.V. | 3721 |
40 |
| Kyodo Yushi Co., Ltd. | 227 |
40 |
| JXTG Nippon Oil & Energy Corporation | 324 |
37 |
| ENEOS Corporation | 581 |
36 |
| NTN Corporation | 4980 |
33 |
| Mitsui Chemicals, Inc. | 3187 |
25 |
| Chevron U.S.A. Inc. | 3847 |
17 |
| Afton Chemical Corporation | 478 |
17 |
| Totalenergies Onetech | 1103 |
17 |
| ExxonMobil Technology and Engineering Company | 905 |
17 |
| Shell Oil Company | 2155 |
16 |
| Saudi Arabian Oil Company | 12404 |
16 |
| Nippon Oil Corporation | 309 |
15 |
| Dow Global Technologies LLC | 10143 |
14 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13109 |
14 |
| Evonik Operations GmbH | 4022 |
14 |
| Other owners | 500 |