- 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 1/38 - Masks having auxiliary features, e.g. special coatings or marks for alignment or testing; Preparation thereof
Patent holdings for IPC class G03F 1/38
Total number of patents in this class: 471
10-year publication summary
|
50
|
38
|
42
|
47
|
52
|
41
|
50
|
30
|
27
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
55 |
| Boe Technology Group Co., Ltd. | 35384 |
40 |
| Hoya Corporation | 2822 |
29 |
| ASML Netherlands B.V. | 6816 |
18 |
| Samsung Electronics Co., Ltd. | 131630 |
16 |
| Apple Inc. | 50209 |
15 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
14 |
| Applied Materials, Inc. | 16587 |
11 |
| SK Hynix Inc. | 11030 |
11 |
| Samsung Display Co., Ltd. | 30585 |
10 |
| United Microelectronics Corp. | 3921 |
10 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
9 |
| Chengdu BOE Optoelectronics Technology Co., Ltd. | 4805 |
9 |
| Kioxia Corporation | 9847 |
9 |
| LG Chem, Ltd. | 17205 |
8 |
| Micron Technology, Inc. | 24960 |
8 |
| International Business Machines Corporation | 60644 |
7 |
| Wuhan China Star Optoelectronics Technology Co., Ltd. | 3894 |
7 |
| Carl Zeiss SMT GmbH | 2646 |
6 |
| Beijing BOE Display Technology Co., Ltd. | 2497 |
6 |
| Other owners | 173 |