- All sections
- C - Chemistry; metallurgy
- 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: 639
10-year publication summary
|
35
|
43
|
55
|
57
|
69
|
44
|
45
|
46
|
49
|
2
|
| 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 | 4611 |
21 |
| FUJIFILM Corporation | 28467 |
16 |
| Tokyo Ohka Kogyo Co., Ltd. | 1506 |
13 |
| LG Chem, Ltd. | 17620 |
12 |
| Michelin Recherche et Technique S.A. | 2238 |
12 |
| BASF SE | 20367 |
11 |
| Toray Industries, Inc. | 6843 |
11 |
| Mitsubishi Gas Chemical Company, Inc. | 3334 |
10 |
| Sumitomo Electric Industries, Ltd. | 14914 |
9 |
| Sumitomo Wiring Systems, Ltd. | 9980 |
9 |
| AutoNetworks Technologies, Ltd. | 6298 |
9 |
| Namics Corporation | 421 |
9 |
| Otsuka Chemical Co., Ltd. | 289 |
9 |
| Hitachi Chemical Company, Ltd. | 2389 |
8 |
| Henkel AG & Co. KGaA | 10337 |
8 |
| Sumitomo Bakelite Co., Ltd. | 1468 |
8 |
| Bridgestone Corporation | 7138 |
7 |
| Compagnie générale des établissements Michelin SCA | 2500 |
7 |
| Ube Industries, Ltd. | 881 |
7 |
| Nissan Chemical Corporation | 1879 |
7 |
| Other owners | 436 |