- All sections
- C - Chemistry; metallurgy
- C03C - Chemical composition of glasses, glazes or vitreous enamels; surface treatment of glass; surface treatment of fibres or filaments made from glass, minerals or slags; joining glass to glass or other materials
- C03C 3/12 - Silica-free oxide glass compositions
Patent holdings for IPC class C03C 3/12
Total number of patents in this class: 243
10-year publication summary
|
22
|
29
|
23
|
19
|
22
|
22
|
13
|
13
|
23
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 9932 |
24 |
| Nippon Electric Glass Co., Ltd. | 2299 |
24 |
| Nikon Corporation | 7162 |
12 |
| Changzhou Fusion New Material Co., Ltd. | 61 |
12 |
| 3m Innovative Properties Company | 18406 |
8 |
| Ohara Inc. | 200 |
8 |
| Guardian Glass, LLC | 558 |
7 |
| Hitachi, Ltd. | 16452 |
6 |
| Ferro GmbH | 21 |
5 |
| Agc, Inc. | 4029 |
5 |
| Hoya Corporation | 2822 |
4 |
| Central Glass Company, Limited | 1244 |
4 |
| Guardian Industries Corp. | 392 |
4 |
| Bass Co., Ltd. | 25 |
4 |
| Solar Paste, LLC | 124 |
4 |
| Resonac Corporation | 2233 |
4 |
| OSRAM GmbH | 2442 |
3 |
| Johnson Matthey Public Limited Company | 1852 |
3 |
| Lumileds LLC | 1827 |
3 |
| Namics Corporation | 393 |
3 |
| Other owners | 96 |