- 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: 664
10-year publication summary
|
35
|
43
|
55
|
57
|
69
|
44
|
45
|
47
|
49
|
31
|
| 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 | 4743 |
21 |
| FUJIFILM Corporation | 29329 |
19 |
| LG Chem, Ltd. | 17615 |
13 |
| Tokyo Ohka Kogyo Co., Ltd. | 1546 |
13 |
| Michelin Recherche et Technique S.A. | 2175 |
12 |
| BASF SE | 20912 |
11 |
| Toray Industries, Inc. | 6935 |
11 |
| Henkel AG & Co. KGaA | 10568 |
10 |
| Mitsubishi Gas Chemical Company, Inc. | 3461 |
10 |
| Otsuka Chemical Co., Ltd. | 291 |
10 |
| Sumitomo Electric Industries, Ltd. | 15443 |
9 |
| Bridgestone Corporation | 7247 |
9 |
| Sumitomo Wiring Systems, Ltd. | 10316 |
9 |
| AutoNetworks Technologies, Ltd. | 6560 |
9 |
| Namics Corporation | 441 |
9 |
| Canon Inc. | 39765 |
8 |
| Hitachi Chemical Company, Ltd. | 2353 |
8 |
| Sumitomo Bakelite Co., Ltd. | 1493 |
8 |
| Compagnie générale des établissements Michelin SCA | 2571 |
7 |
| Ube Industries, Ltd. | 850 |
7 |
| Other owners | 451 |