- 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: 719
10-year publication summary
|
43
|
55
|
57
|
69
|
44
|
45
|
47
|
49
|
52
|
37
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30514 |
22 |
| Compagnie Generale des Etablissements Michelin | 4970 |
21 |
| LG Chem, Ltd. | 17921 |
14 |
| Henkel AG & Co. KGaA | 10770 |
13 |
| Tokyo Ohka Kogyo Co., Ltd. | 1562 |
13 |
| Michelin Recherche et Technique S.A. | 2084 |
12 |
| Mitsubishi Gas Chemical Company, Inc. | 3622 |
12 |
| Namics Corporation | 483 |
12 |
| BASF SE | 21303 |
11 |
| Toray Industries, Inc. | 7113 |
11 |
| Otsuka Chemical Co., Ltd. | 284 |
10 |
| Sumitomo Electric Industries, Ltd. | 16331 |
9 |
| Bridgestone Corporation | 7259 |
9 |
| Sumitomo Wiring Systems, Ltd. | 11005 |
9 |
| AutoNetworks Technologies, Ltd. | 7108 |
9 |
| Sumitomo Bakelite Co., Ltd. | 1534 |
9 |
| Resonac Corporation | 3530 |
9 |
| Canon Inc. | 43817 |
8 |
| Hitachi Chemical Company, Ltd. | 2241 |
8 |
| Compagnie générale des établissements Michelin SCA | 2716 |
7 |
| Other owners | 491 |