- 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 41/89 - Coating or impregnating for obtaining at least two superposed coatings having different compositions
Patent holdings for IPC class C04B 41/89
Total number of patents in this class: 734
10-year publication summary
|
58
|
48
|
58
|
58
|
44
|
48
|
37
|
63
|
47
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 17789 |
91 |
| Rolls-Royce Corporation | 1719 |
38 |
| Safran Ceramics | 392 |
32 |
| Centre National de La Recherche Scientifique | 10102 |
26 |
| Rtx Corporation | 9109 |
26 |
| Goodrich Corporation | 2089 |
18 |
| Universite de Bordeaux | 824 |
17 |
| Honeywell International Inc. | 14021 |
16 |
| Corning Incorporated | 10125 |
14 |
| NGK Insulators, Ltd. | 4792 |
14 |
| Rolls-Royce High Temperature Composites, Inc. | 136 |
12 |
| SECO Tools AB | 464 |
12 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 125 |
11 |
| Safran Aircraft Engines | 6039 |
11 |
| Monalisa Group Co., Ltd. | 35 |
10 |
| Applied Materials, Inc. | 17745 |
9 |
| James R. Glidewell Dental Ceramics, Inc. | 234 |
9 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 486 |
9 |
| Siemens AG | 24565 |
8 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10692 |
8 |
| Other owners | 343 |