- All sections
- C - Chemistrymetallurgy
- C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K 5/156 - Heterocyclic compounds having oxygen in the ring having two oxygen atoms in the ring
Patent holdings for IPC class C08K 5/156
Total number of patents in this class: 35
10-year publication summary
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1
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4
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5
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0
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1
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1
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1
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2
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2
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kingfa SCI & Tech Co. Ltd. | 596 |
7 |
| Gfbiochemicals Limited | 49 |
4 |
| Zhuhai Wango Chemical Co., Ltd | 42 |
3 |
| BASF SE | 20666 |
2 |
| Tianjin Kingfa New Material Co., Ltd. | 8 |
2 |
| Resonac Corporation | 2628 |
2 |
| Ricoh Company, Ltd. | 13209 |
1 |
| Sumitomo Chemical Company, Limited | 9005 |
1 |
| The Johns Hopkins University | 5612 |
1 |
| Toray Industries, Inc. | 6859 |
1 |
| Prime Polymer Co., Ltd. | 184 |
1 |
| Ajinomoto Co., Inc. | 2301 |
1 |
| Arkema France | 3978 |
1 |
| Arlanxeo Deutschland GmbH | 273 |
1 |
| Bank of America, N.A., AS Collateral Agent | 350 |
1 |
| Cambridge Display Technology Limited | 500 |
1 |
| Pirelli Tyre S.p.A. | 1896 |
1 |
| Rodenstock GmbH | 382 |
1 |
| Segetis, Inc. | 39 |
1 |
| YANG, Hongmei | 8 |
1 |
| Other owners | 1 |