- All sections
- C - Chemistrymetallurgy
- C04B - Limemagnesiaslagcementscompositions thereof, e.g. mortars, concrete or like building materialsartificial stoneceramicsrefractoriestreatment 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: 772
10-year publication summary
|
51
|
40
|
51
|
56
|
42
|
48
|
37
|
58
|
48
|
37
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 13827 |
94 |
| Rolls-Royce Corporation | 1753 |
38 |
| Safran Ceramics | 421 |
34 |
| Rtx Corporation | 9611 |
32 |
| Centre National de La Recherche Scientifique | 10716 |
29 |
| Goodrich Corporation | 2187 |
21 |
| Universite de Bordeaux | 891 |
21 |
| Honeywell International Inc. | 13571 |
16 |
| Corning Incorporated | 10389 |
14 |
| NGK Insulators, Ltd. | 5149 |
14 |
| Rolls-Royce High Temperature Composites, Inc. | 135 |
12 |
| Safran Aircraft Engines | 6420 |
12 |
| SECO Tools AB | 454 |
12 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 135 |
11 |
| Monalisa Group Co., Ltd. | 39 |
11 |
| Applied Materials, Inc. | 19327 |
9 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10954 |
9 |
| James R. Glidewell Dental Ceramics, Inc. | 255 |
9 |
| Saint-Gobain Centre de Recherches et d'Etudes Europeen | 490 |
9 |
| Siemens AG | 24323 |
8 |
| Other owners | 357 |