- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment of natural stone
- C04B 35/638 - Removal thereof
Patent holdings for IPC class C04B 35/638
Total number of patents in this class: 523
10-year publication summary
|
52
|
65
|
57
|
50
|
39
|
37
|
33
|
41
|
39
|
33
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 10370 |
43 |
| NGK Insulators, Ltd. | 5129 |
27 |
| TDK Corporation | 6879 |
20 |
| Murata Manufacturing Co., Ltd. | 24907 |
16 |
| General Electric Company | 13865 |
15 |
| Rtx Corporation | 9529 |
12 |
| TDK Electronics AG | 965 |
11 |
| Quantumscape Battery, Inc. | 197 |
11 |
| Safran Ceramics | 416 |
8 |
| BASF SE | 21078 |
7 |
| Ivoclar Vivadent AG | 1052 |
7 |
| Centre National de La Recherche Scientifique | 10641 |
6 |
| Desktop Metal, Inc. | 288 |
6 |
| Rolex S.A. | 683 |
6 |
| The Boeing Company | 20170 |
5 |
| Archer Daniels Midland Company | 1130 |
5 |
| Refractory Intellectual Property GmbH & Co. KG | 543 |
5 |
| Kyocera Corporation | 14013 |
4 |
| Shin-Etsu Chemical Co., Ltd. | 5743 |
4 |
| Ibiden Co., Ltd. | 1718 |
4 |
| Other owners | 301 |