- 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: 700
10-year publication summary
|
30
|
58
|
48
|
58
|
57
|
44
|
48
|
36
|
62
|
19
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 18133 |
88 |
| Rolls-Royce Corporation | 1686 |
37 |
| Safran Ceramics | 366 |
29 |
| Rtx Corporation | 8674 |
25 |
| Centre National de La Recherche Scientifique | 9632 |
22 |
| Goodrich Corporation | 2081 |
16 |
| Honeywell International Inc. | 13799 |
15 |
| Corning Incorporated | 9932 |
14 |
| NGK Insulators, Ltd. | 4589 |
14 |
| Universite de Bordeaux | 778 |
14 |
| Rolls-Royce High Temperature Composites, Inc. | 129 |
12 |
| SECO Tools AB | 456 |
12 |
| Mitsubishi Heavy Industries Aero Engines, Ltd. | 121 |
11 |
| Safran Aircraft Engines | 5739 |
11 |
| Applied Materials, Inc. | 16587 |
9 |
| Monalisa Group Co., Ltd. | 33 |
9 |
| Siemens AG | 24990 |
8 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
8 |
| Herakles | 169 |
8 |
| James R. Glidewell Dental Ceramics, Inc. | 205 |
8 |
| Other owners | 330 |