- All sections
- C - Chemistry; metallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/3447 - Five-membered rings condensed with carbocyclic rings
Patent holdings for IPC class C08K 5/3447
Total number of patents in this class: 110
10-year publication summary
|
7
|
13
|
10
|
7
|
3
|
10
|
9
|
6
|
7
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
8 |
| Bridgestone Corporation | 7067 |
5 |
| BASF SE | 19740 |
4 |
| Daikin Industries, Ltd. | 9495 |
4 |
| Mitsubishi Chemical Corporation | 4313 |
4 |
| SABIC Global Technologies B.V. | 4044 |
4 |
| Sumitomo Chemical Company, Limited | 8808 |
3 |
| Arisawa Mfg. Co., Ltd. | 120 |
3 |
| DIC Corporation | 3597 |
3 |
| Orient Chemical Industries, Ltd. | 34 |
3 |
| Otsuka Chemical Co., Ltd. | 286 |
3 |
| Canon Inc. | 36841 |
2 |
| Fujikura Ltd. | 2777 |
2 |
| The Furukawa Electric Co., Ltd. | 3486 |
2 |
| Asahi Organic Chemicals Industry Co., Ltd. | 97 |
2 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 354 |
2 |
| Denka Company Limited | 2189 |
2 |
| DONGWOO FINE-CHEM Co., Ltd. | 1163 |
2 |
| Fuji Polymer Industries Co., Ltd. | 107 |
2 |
| Kanto Kagaku Kabushiki Kaisha | 88 |
2 |
| Other owners | 48 |