- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 11/02 - Dehydrating gypsum
Patent holdings for IPC class C04B 11/02
Total number of patents in this class: 48
10-year publication summary
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2
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3
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2
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3
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1
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4
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1
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3
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5
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6
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| United States Gypsum Company | 905 |
6 |
| Knauf Gips KG | 617 |
5 |
| CertainTeed Gypsum, Inc. | 213 |
4 |
| Georgia-Pacific Gypsum LLC | 218 |
2 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1246 |
2 |
| Holcim Technology Ltd. | 551 |
2 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1215 |
2 |
| Saint-Gobain Placo | 244 |
2 |
| Yoshino Gypsum Co., Ltd. | 253 |
2 |
| Tapered End, LP | 3 |
2 |
| Mitsubishi Power, Ltd. | 1810 |
2 |
| Georgia Tech Research Corporation | 2828 |
1 |
| Claudius Peters Technologies GmbH | 9 |
1 |
| CSR Building Products Limited | 48 |
1 |
| Gypsum Technologies Inc. | 9 |
1 |
| The Nugyp Corp. | 1 |
1 |
| Saudi Arabian Mining Company (Ma'aden) | 9 |
1 |
| Schenck Process LLC | 67 |
1 |
| ThyssenKrupp AG | 3336 |
1 |
| ThyssenKrupp Industrial Solutions AG | 632 |
1 |
| Other owners | 8 |