- 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: 734
10-year publication summary
|
63
|
35
|
59
|
58
|
56
|
54
|
50
|
60
|
53
|
43
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Heraeus Quarzglas GmbH & Co. KG | 417 |
103 |
| Corning Incorporated | 10500 |
98 |
| Sumitomo Electric Industries, Ltd. | 16305 |
62 |
| Fujikura Ltd. | 3078 |
33 |
| The Furukawa Electric Co., Ltd. | 3701 |
32 |
| Shin-Etsu Chemical Co., Ltd. | 6083 |
31 |
| Heraeus Quartz North America LLC | 29 |
18 |
| ASML Netherlands B.V. | 7906 |
16 |
| OFS Fitel, LLC | 574 |
16 |
| Sterlite Technologies Limited | 245 |
15 |
| NKT Photonics A/S | 267 |
15 |
| Draka Comteq, B.V. | 233 |
11 |
| Prysmian S.p.A. | 908 |
9 |
| j-fiber GmbH | 26 |
8 |
| University of Southampton | 456 |
8 |
| Microsoft Technology Licensing, LLC | 54439 |
7 |
| Fiberhome Telecommunication Technologies Co., Ltd. | 366 |
7 |
| University of Central Florida Research Foundation, Inc. | 1249 |
7 |
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1845 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2856 |
5 |
| Other owners | 227 |