- 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 41/90 - Coating or impregnating for obtaining at least two superposed coatings having different compositions at least one coating being a metal
Patent holdings for IPC class C04B 41/90
Total number of patents in this class: 104
10-year publication summary
3
|
6
|
8
|
7
|
9
|
10
|
1
|
4
|
9
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Rolls-Royce Corporation | 1686 |
5 |
Toyo Tanso Co., Ltd. | 227 |
4 |
Sumitomo Electric Hardmetal Corp. | 969 |
3 |
Murata Manufacturing Co., Ltd. | 22355 |
3 |
NGK Insulators, Ltd. | 4589 |
3 |
Curamik Electronics GmbH | 20 |
3 |
Rogers Germany GmbH | 123 |
3 |
Safran Aircraft Engines | 5739 |
3 |
Tokuyama Corporation | 1248 |
3 |
Kyocera Corporation | 12735 |
2 |
Cardiac Pacemakers, Inc. | 3115 |
2 |
CeramOss GmbH | 2 |
2 |
Denka Company Limited | 2189 |
2 |
Mitsubishi Heavy Industries Aero Engines, Ltd. | 121 |
2 |
Oerlikon Surface Solutions AG, Pfaffikon | 556 |
2 |
Safran Ceramics | 366 |
2 |
The Swatch Group Research and Development Ltd | 778 |
2 |
Rtx Corporation | 8674 |
2 |
3m Innovative Properties Company | 18406 |
1 |
Siemens AG | 24990 |
1 |
Other owners | 54 |