- All sections
- G - Physics
- G03F - Photomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices; materials therefor; originals therefor; apparatus 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: 386
10-year publication summary
40
|
64
|
42
|
39
|
25
|
26
|
15
|
13
|
10
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Hoya Corporation | 2822 |
83 |
Shin-Etsu Chemical Co., Ltd. | 5132 |
35 |
Boe Technology Group Co., Ltd. | 35384 |
23 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
15 |
FUJIFILM Corporation | 27102 |
12 |
Hon Hai Precision Industry Co., Ltd. | 4157 |
10 |
Tsinghua University | 5426 |
10 |
LG Chem, Ltd. | 17205 |
8 |
Samsung Display Co., Ltd. | 30585 |
7 |
ASML Netherlands B.V. | 6816 |
7 |
Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
7 |
Kioxia Corporation | 9847 |
7 |
Intel Corporation | 45621 |
6 |
Beijing BOE Display Technology Co., Ltd. | 2497 |
6 |
Beijing BOE Optoelectronics Technology Co., Ltd. | 3779 |
5 |
Canon Inc. | 36841 |
4 |
Nissan Chemical Industries, Ltd. | 1822 |
4 |
Ordos Yuansheng Optoelectronics Co., Ltd. | 1232 |
4 |
Samsung Electronics Co., Ltd. | 131630 |
3 |
Chengdu BOE Optoelectronics Technology Co., Ltd. | 4805 |
3 |
Other owners | 127 |