- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 7/44 - BurningMelting
Patent holdings for IPC class C04B 7/44
Total number of patents in this class: 351
10-year publication summary
|
10
|
20
|
12
|
18
|
21
|
39
|
23
|
31
|
36
|
37
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Taiheiyo Cement Corporation | 243 |
21 |
| Terra CO2 Technology Holdings, Inc. | 38 |
21 |
| Holcim Technology Ltd. | 583 |
18 |
| Mitsubishi Materials Corporation | 2472 |
18 |
| KHD Humboldt Wedag GmbH | 190 |
14 |
| FLSmidth A/S | 775 |
12 |
| Taiheiyo Engineering Corporation | 29 |
12 |
| thyssenkrupp Polysius GmbH | 133 |
10 |
| ThyssenKrupp AG | 3336 |
9 |
| ThyssenKrupp Industrial Solutions AG | 632 |
8 |
| King Fahd University of Petroleum and Minerals | 1362 |
7 |
| Tokuyama Corporation | 1424 |
7 |
| Sudbayerisches Portland-zementwerk Gebr. Wiesbock & Co. GmbH | 16 |
6 |
| Mitsubishi Ube Cement Corporation | 53 |
6 |
| Sumitomo Osaka Cement Co., Ltd. | 864 |
5 |
| Calix Ltd | 95 |
4 |
| Vicat | 99 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3103 |
4 |
| FLSmidth Cement A/S | 111 |
4 |
| CalPortland Company | 47 |
3 |
| Other owners | 158 |