- All sections
- C - Chemistrymetallurgy
- C30B - Single-crystal growthunidirectional solidification of eutectic material or unidirectional demixing of eutectoid materialrefining by zone-melting of materialproduction of a homogeneous polycrystalline material with defined structuresingle crystals or homogeneous polycrystalline material with defined structureafter-treatment of single crystals or a homogeneous polycrystalline material with defined structureapparatus therefor
- C30B 29/18 - Quartz
Patent holdings for IPC class C30B 29/18
Total number of patents in this class: 53
10-year publication summary
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2
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2
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3
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4
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0
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2
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2
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1
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2
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3
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Murata Manufacturing Co., Ltd. | 26029 |
5 |
| Ark Crystal, LLC | 15 |
5 |
| Centre National de La Recherche Scientifique | 11143 |
4 |
| Corning Incorporated | 10560 |
3 |
| Nivarox-FAR S.A. | 290 |
3 |
| NGK Insulators, Ltd. | 5169 |
2 |
| Changzhou University | 211 |
2 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1456 |
2 |
| Icfo | 3 |
2 |
| Universitat Autonoma de Barcelona | 346 |
2 |
| Universite de Montpellier | 1049 |
2 |
| Ushio Denki Kabushiki Kaisha | 1223 |
2 |
| Kyocera Corporation | 14521 |
1 |
| Sumitomo Chemical Company, Limited | 8995 |
1 |
| President and Fellows of Harvard College | 6119 |
1 |
| Purdue Research Foundation | 3993 |
1 |
| Diamond Innovations, Inc. | 235 |
1 |
| Heraeus Quarzglas GmbH & Co. KG | 416 |
1 |
| The Japan Steel Works, Ltd. | 883 |
1 |
| Japan Super Quartz Corporation | 36 |
1 |
| Other owners | 11 |