- All sections
- C - Chemistry; metallurgy
- C04B - Lime; magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone; ceramics; refractories; treatment of natural stone
- C04B 35/443 - Magnesium aluminate spinel
Patent holdings for IPC class C04B 35/443
Total number of patents in this class: 204
10-year publication summary
15
|
19
|
22
|
20
|
21
|
17
|
11
|
9
|
7
|
6
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Electric Industries, Ltd. | 14131 |
17 |
Corning Incorporated | 9932 |
13 |
Refractory Intellectual Property GmbH & Co. KG | 502 |
12 |
Saint-Gobain Centre de Recherches et d'Etudes Europeen | 475 |
9 |
The Government of the United States of America, as represented by the Secretary of the Navy | 1102 |
7 |
Murata Manufacturing Co., Ltd. | 22355 |
6 |
Refratechnik Holding GmbH | 138 |
6 |
Kyocera Corporation | 12735 |
5 |
NGK Insulators, Ltd. | 4589 |
5 |
Shin-Etsu Chemical Co., Ltd. | 5132 |
4 |
CoorsTek KK | 51 |
4 |
Saint-Gobain Ceramics & Plastics, Inc. | 812 |
4 |
Sasol (USA) Corporation | 69 |
4 |
Carl Zeiss SMT AG | 287 |
3 |
CeramTec-ETEC GmbH | 21 |
3 |
Denka Company Limited | 2189 |
3 |
DIC Corporation | 3597 |
3 |
Tateho Chemical Industries Co., Ltd. | 64 |
3 |
6K Inc | 132 |
3 |
Siemens AG | 24990 |
2 |
Other owners | 88 |