- All sections
- C - Chemistry; metallurgy
- C03B - Manufacture or shaping of glass, or of mineral or slag wool; supplementary processes in the manufacture or shaping of glass, or of mineral or slag wool
- C03B 37/012 - Manufacture of preforms for drawing fibres or filaments
Patent holdings for IPC class C03B 37/012
Total number of patents in this class: 625
10-year publication summary
|
43
|
49
|
63
|
35
|
59
|
57
|
54
|
53
|
47
|
23
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Heraeus Quarzglas GmbH & Co. KG | 420 |
96 |
| Corning Incorporated | 9932 |
80 |
| Sumitomo Electric Industries, Ltd. | 14131 |
46 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
34 |
| Fujikura Ltd. | 2777 |
27 |
| The Furukawa Electric Co., Ltd. | 3486 |
26 |
| OFS Fitel, LLC | 549 |
14 |
| Sterlite Technologies Limited | 185 |
14 |
| Heraeus Quartz North America LLC | 23 |
14 |
| Draka Comteq, B.V. | 275 |
12 |
| NKT Photonics A/S | 215 |
11 |
| ASML Netherlands B.V. | 6816 |
10 |
| Prysmian S.p.A. | 846 |
9 |
| j-fiber GmbH | 25 |
8 |
| Fiberhome Telecommunication Technologies Co., Ltd. | 337 |
7 |
| University of Southampton | 444 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2734 |
5 |
| Heraeus Tenevo LLC | 8 |
5 |
| Shin-Etsu Quartz Products Co., Ltd. | 160 |
5 |
| Silitec Fibers SA | 6 |
5 |
| Other owners | 191 |