- All sections
- C - Chemistry; metallurgy
- C30B - Single-crystal growth; unidirectional solidification of eutectic material or unidirectional demixing of eutectoid material; refining by zone-melting of material; production of a homogeneous polycrystalline material with defined structure; single crystals or homogeneous polycrystalline material with defined structure; after-treatment of single crystals or a homogeneous polycrystalline material with defined structure; apparatus therefor
- C30B 29/18 - Quartz
Patent holdings for IPC class C30B 29/18
Total number of patents in this class: 46
10-year publication summary
|
9
|
6
|
2
|
2
|
3
|
4
|
0
|
1
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ark Crystal, LLC | 18 |
5 |
| Murata Manufacturing Co., Ltd. | 22355 |
4 |
| Centre National de La Recherche Scientifique | 9632 |
3 |
| Corning Incorporated | 9932 |
3 |
| Nivarox-FAR S.A. | 265 |
3 |
| NGK Insulators, Ltd. | 4589 |
2 |
| Changzhou University | 141 |
2 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1254 |
2 |
| Icfo | 3 |
2 |
| Ushio Denki Kabushiki Kaisha | 1088 |
2 |
| Kyocera Corporation | 12735 |
1 |
| Mitsubishi Chemical Corporation | 4313 |
1 |
| Purdue Research Foundation | 3277 |
1 |
| Diamond Innovations, Inc. | 241 |
1 |
| Heraeus Quarzglas GmbH & Co. KG | 420 |
1 |
| Industry-Academic Cooperation Foundation, Yonsei University | 2329 |
1 |
| Japan Super Quartz Corporation | 38 |
1 |
| Jinan Jingzheng Electronics Co., Ltd. | 16 |
1 |
| Nippon Electric Glass Co., Ltd. | 2299 |
1 |
| Public University Corporation Nagoya City University | 139 |
1 |
| Other owners | 8 |