- All sections
- G - Physics
- G03F - Photomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devicesmaterials therefororiginals thereforapparatus specially adapted therefor
- G03F 1/50 - Mask blanks not covered by groups Preparation thereof
Patent holdings for IPC class G03F 1/50
Total number of patents in this class: 389
10-year publication summary
|
41
|
39
|
25
|
26
|
16
|
14
|
10
|
12
|
7
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoya Corporation | 2757 |
78 |
| Shin-Etsu Chemical Co., Ltd. | 5878 |
35 |
| Boe Technology Group Co., Ltd. | 42523 |
21 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 46661 |
15 |
| FUJIFILM Corporation | 30063 |
12 |
| Hon Hai Precision Industry Co., Ltd. | 4005 |
10 |
| Tsinghua University | 6071 |
10 |
| ASML Netherlands B.V. | 7673 |
9 |
| Samsung Display Co., Ltd. | 37314 |
8 |
| LG Chem, Ltd. | 17745 |
8 |
| Kioxia Corporation | 10534 |
7 |
| Intel Corporation | 46583 |
6 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8475 |
6 |
| Beijing BOE Display Technology Co., Ltd. | 2903 |
5 |
| Beijing BOE Optoelectronics Technology Co., Ltd. | 3916 |
5 |
| Canon Inc. | 41739 |
4 |
| Nissan Chemical Industries, Ltd. | 1683 |
4 |
| Ordos Yuansheng Optoelectronics Co., Ltd. | 1285 |
4 |
| Samsung Electronics Co., Ltd. | 151726 |
3 |
| Industry-Academic Cooperation Foundation, Yonsei University | 2423 |
3 |
| Other owners | 136 |