- All sections
- C - Chemistrymetallurgy
- C10C - Working-up tar, pitch, asphalt, bitumenpyroligneous acid
- C10C 1/04 - Working-up tar by distillation
Patent holdings for IPC class C10C 1/04
Total number of patents in this class: 20
10-year publication summary
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0
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0
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3
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1
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3
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0
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0
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3
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1
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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
|
|---|---|---|
| GrafTech International Holdings Inc. | 112 |
4 |
| Carbon Holdings Intellectual Properties, LLC | 59 |
3 |
| POSCO | 2188 |
2 |
| University of Wyoming | 361 |
2 |
| China University of Petroleum | 57 |
2 |
| Uop LLC | 4240 |
1 |
| Energy & Environmental Research Center Foundation | 56 |
1 |
| Kellogg Brown & Root LLC | 518 |
1 |
| Nippon Steel Corporation | 6195 |
1 |
| Saint-Gobain do Brasil Produtos Industriais e para Construção Ltda. | 22 |
1 |
| Syncrude Canada Ltd. in Trust for The Owners of The Syncrude Project, AS such Owners Exist NOW and in The Future | 41 |
1 |
| Henan Longcheng Coal High Efficiency Technology Application Co., Ltd. | 17 |
1 |
| Other owners | 0 |