- All sections
- C - Chemistrymetallurgy
- C03B - Manufacture or shaping of glass, or of mineral or slag woolsupplementary processes in the manufacture or shaping of glass, or of mineral or slag wool
- C03B 37/014 - Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means
Patent holdings for IPC class C03B 37/014
Total number of patents in this class: 408
10-year publication summary
|
36
|
24
|
30
|
30
|
43
|
28
|
23
|
26
|
18
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 10143 |
103 |
| Shin-Etsu Chemical Co., Ltd. | 5479 |
63 |
| Sumitomo Electric Industries, Ltd. | 15046 |
52 |
| Heraeus Quarzglas GmbH & Co. KG | 410 |
35 |
| The Furukawa Electric Co., Ltd. | 3605 |
32 |
| Prysmian S.p.A. | 861 |
21 |
| Fujikura Ltd. | 2884 |
17 |
| Shin-Etsu Quartz Products Co., Ltd. | 153 |
6 |
| biolitec Unternehmensbeteiligungs II AG | 71 |
5 |
| Jiangsu Etern Company Limited | 29 |
5 |
| ASI/Silica Machinery, LLC | 5 |
4 |
| OFS Fitel, LLC | 558 |
3 |
| Sterlite Optical Technologies Limited | 15 |
3 |
| Sterlite Technologies Limited | 210 |
3 |
| Hengtong Optical Material Co., Ltd | 14 |
3 |
| Jiangsu Etern Optical Fiber Technology Co., Ltd. | 12 |
3 |
| Huawei Technologies Co., Ltd. | 107607 |
2 |
| Beneq Oy | 231 |
2 |
| Fiberhome Telecommunication Technologies Co., Ltd. | 342 |
2 |
| j-plasma GmbH | 10 |
2 |
| Other owners | 42 |