- 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 35/638 - Removal thereof
Patent holdings for IPC class C04B 35/638
Total number of patents in this class: 469
10-year publication summary
|
33
|
51
|
66
|
57
|
53
|
38
|
39
|
35
|
43
|
17
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 9932 |
35 |
| NGK Insulators, Ltd. | 4589 |
26 |
| TDK Corporation | 6306 |
20 |
| Murata Manufacturing Co., Ltd. | 22355 |
16 |
| General Electric Company | 18133 |
15 |
| Rtx Corporation | 8674 |
12 |
| TDK Electronics AG | 863 |
11 |
| Safran Ceramics | 366 |
8 |
| BASF SE | 19740 |
7 |
| Quantumscape Battery, Inc. | 168 |
7 |
| Desktop Metal, Inc. | 276 |
6 |
| Ivoclar Vivadent AG | 1060 |
6 |
| Rolex S.A. | 606 |
6 |
| The Boeing Company | 19843 |
5 |
| Archer Daniels Midland Company | 1164 |
5 |
| Refractory Intellectual Property GmbH & Co. KG | 502 |
5 |
| Centre National de La Recherche Scientifique | 9632 |
4 |
| Kyocera Corporation | 12735 |
4 |
| Ibiden Co., Ltd. | 1724 |
4 |
| The Penn State Research Foundation | 1423 |
4 |
| Other owners | 263 |