- 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 41/91 - After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
Patent holdings for IPC class C04B 41/91
Total number of patents in this class: 196
10-year publication summary
24
|
16
|
15
|
17
|
12
|
23
|
15
|
13
|
16
|
8
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Microban Products Company | 313 |
9 |
General Electric Company | 18133 |
8 |
Rolls-Royce Corporation | 1686 |
6 |
Honeywell International Inc. | 13799 |
4 |
Denka Company Limited | 2189 |
4 |
Sumitomo Electric Industries, Ltd. | 14131 |
3 |
Hitachi Metals, Ltd. | 2175 |
3 |
Kyocera Corporation | 12735 |
3 |
Corning Incorporated | 9932 |
3 |
Daicel Polymer Ltd. | 85 |
3 |
Goertek Inc. | 2477 |
3 |
II-VI Delaware, Inc. | 1720 |
3 |
Toda Kogyo Corporation | 323 |
3 |
Siemens AG | 24990 |
2 |
Centre National de La Recherche Scientifique | 9632 |
2 |
Matsushita Electric Industrial Co., Ltd. | 4724 |
2 |
Murata Manufacturing Co., Ltd. | 22355 |
2 |
Raytheon Company | 8535 |
2 |
Lam Research Corporation | 4775 |
2 |
Ibiden Co., Ltd. | 1724 |
2 |
Other owners | 127 |