- 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: 516
10-year publication summary
|
52
|
66
|
57
|
54
|
39
|
39
|
35
|
43
|
38
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 10252 |
40 |
| NGK Insulators, Ltd. | 4943 |
27 |
| TDK Corporation | 6689 |
20 |
| Murata Manufacturing Co., Ltd. | 24409 |
16 |
| General Electric Company | 13838 |
15 |
| Rtx Corporation | 9319 |
12 |
| TDK Electronics AG | 932 |
11 |
| Quantumscape Battery, Inc. | 193 |
10 |
| Safran Ceramics | 409 |
8 |
| BASF SE | 20874 |
7 |
| Ivoclar Vivadent AG | 1048 |
7 |
| Centre National de La Recherche Scientifique | 10395 |
6 |
| Desktop Metal, Inc. | 284 |
6 |
| Rolex S.A. | 660 |
6 |
| The Boeing Company | 20031 |
5 |
| Archer Daniels Midland Company | 1110 |
5 |
| Refractory Intellectual Property GmbH & Co. KG | 535 |
5 |
| Kyocera Corporation | 13721 |
4 |
| Shin-Etsu Chemical Co., Ltd. | 5615 |
4 |
| Ibiden Co., Ltd. | 1721 |
4 |
| Other owners | 298 |