- All sections
- C - Chemistrymetallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/3445 - Five-membered rings
Patent holdings for IPC class C08K 5/3445
Total number of patents in this class: 672
10-year publication summary
|
35
|
41
|
55
|
56
|
65
|
42
|
45
|
45
|
49
|
39
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Compagnie Generale des Etablissements Michelin | 4761 |
21 |
| FUJIFILM Corporation | 29586 |
19 |
| LG Chem, Ltd. | 17656 |
13 |
| Tokyo Ohka Kogyo Co., Ltd. | 1550 |
13 |
| Michelin Recherche et Technique S.A. | 2162 |
12 |
| BASF SE | 20991 |
11 |
| Toray Industries, Inc. | 6978 |
11 |
| Mitsubishi Gas Chemical Company, Inc. | 3482 |
11 |
| Henkel AG & Co. KGaA | 10611 |
10 |
| Otsuka Chemical Co., Ltd. | 289 |
10 |
| Sumitomo Electric Industries, Ltd. | 15609 |
9 |
| Bridgestone Corporation | 7225 |
9 |
| Sumitomo Wiring Systems, Ltd. | 10459 |
9 |
| AutoNetworks Technologies, Ltd. | 6657 |
9 |
| Namics Corporation | 449 |
9 |
| Canon Inc. | 40398 |
8 |
| Hitachi Chemical Company, Ltd. | 2339 |
8 |
| Sumitomo Bakelite Co., Ltd. | 1509 |
8 |
| Compagnie générale des établissements Michelin SCA | 2576 |
7 |
| Ube Industries, Ltd. | 837 |
7 |
| Other owners | 458 |