- 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 3/253 - Silica-free oxide glass compositions containing germanium
Patent holdings for IPC class C03C 3/253
Total number of patents in this class: 75
10-year publication summary
6
|
3
|
3
|
3
|
3
|
1
|
5
|
7
|
1
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Ohara Inc. | 200 |
12 |
Corning Incorporated | 9932 |
7 |
Hoya Corporation | 2822 |
6 |
Nihon Yamamura Glass Co., Ltd. | 144 |
5 |
Nippon Electric Glass Co., Ltd. | 2299 |
5 |
The University of Tokyo | 3903 |
4 |
Nikon Corporation | 7162 |
3 |
Asahi Glass Company, Limited | 2985 |
3 |
Covina Biomedical Inc. | 4 |
3 |
Centre National de La Recherche Scientifique | 9632 |
2 |
Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
2 |
Institut Polytechnique de Bordeaux | 356 |
2 |
NP Photonics, Inc. | 11 |
2 |
Universite de Bordeaux | 778 |
2 |
Centre National de La Recherche Scientifique (cnrs) | 3191 |
2 |
Canon Inc. | 36841 |
1 |
National Institute of Advanced Industrial Science and Technology | 3677 |
1 |
CDGM Glass Co., Ltd | 124 |
1 |
Dalhousie University | 168 |
1 |
Ericsson Telecomunicacoes S.A. | 42 |
1 |
Other owners | 10 |