- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 33/02 - Silicon
Patent holdings for IPC class C01B 33/02
Total number of patents in this class: 846
10-year publication summary
|
53
|
53
|
53
|
62
|
64
|
50
|
39
|
51
|
51
|
21
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wacker Chemie AG | 2091 |
39 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
34 |
| Tokuyama Corporation | 1248 |
33 |
| Konica Minolta Medical & Graphic, Inc. | 986 |
17 |
| Sumco Corporation | 1116 |
16 |
| Mitsubishi Materials Corporation | 2378 |
15 |
| Nexeon Limited | 130 |
15 |
| Kabushiki Kaisha Toyota Jidoshokki | 1699 |
14 |
| Sharp Kabushiki Kaisha | 18957 |
14 |
| JX Nippon Mining & Metals Corporation | 1576 |
12 |
| REC Silicon Inc | 77 |
12 |
| ionobell Inc | 25 |
11 |
| DAe Joo Electronic Materials Co., Ltd. | 56 |
10 |
| Kit Co, Ltd. | 26 |
10 |
| Umicore | 542 |
10 |
| Bosquet Silicon Corp. | 20 |
10 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
9 |
| JNC Corporation | 1527 |
9 |
| Mitsui Mining & Smelting Co., Ltd. | 1373 |
9 |
| LG Chem, Ltd. | 17205 |
8 |
| Other owners | 539 |