- 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 37/012 - Manufacture of preforms for drawing fibres or filaments
Patent holdings for IPC class C03B 37/012
Total number of patents in this class: 666
10-year publication summary
|
49
|
63
|
35
|
59
|
58
|
56
|
54
|
49
|
58
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Heraeus Quarzglas GmbH & Co. KG | 409 |
95 |
| Corning Incorporated | 10258 |
85 |
| Sumitomo Electric Industries, Ltd. | 15443 |
52 |
| Shin-Etsu Chemical Co., Ltd. | 5644 |
31 |
| The Furukawa Electric Co., Ltd. | 3645 |
31 |
| Fujikura Ltd. | 2925 |
30 |
| OFS Fitel, LLC | 562 |
15 |
| Sterlite Technologies Limited | 222 |
15 |
| Heraeus Quartz North America LLC | 26 |
15 |
| ASML Netherlands B.V. | 7371 |
14 |
| NKT Photonics A/S | 249 |
14 |
| Draka Comteq, B.V. | 254 |
11 |
| j-fiber GmbH | 27 |
9 |
| Prysmian S.p.A. | 882 |
9 |
| Fiberhome Telecommunication Technologies Co., Ltd. | 351 |
7 |
| University of Southampton | 443 |
7 |
| The United States of America as represented by the Secretary of the Navy | 2744 |
5 |
| Heraeus Tenevo LLC | 8 |
5 |
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1772 |
5 |
| nLIGHT, Inc. | 408 |
5 |
| Other owners | 206 |