Patent holdings for IPC class G01N 23/2251

Total number of patents in this class: 780

10-year publication summary

19
37
62
73
103
95
110
126
90
13
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Hitachi High-Tech Corporation
5613
99
ASML Netherlands B.V.
7697
77
KLA Corporation
1776
40
NuFlare Technology, Inc.
907
37
FEI Company
1028
26
Applied Materials Israel, Ltd.
643
24
Samsung Electronics Co., Ltd.
152716
20
Applied Materials, Inc.
19887
19
KLA-Tencor Corporation
2524
17
Carl Zeiss SMT GmbH
3190
14
Saudi Arabian Oil Company
13931
10
TASMIT, Inc.
70
10
Techinsights Inc.
97
8
LG Chem, Ltd.
17786
7
Carl Zeiss Microscopy GmbH
1249
7
JEOL Ltd.
614
7
JFE Steel Corporation
7259
6
Oxford Instruments NanoTechnology Tools Limited
142
6
Taiwan Semiconductor Manufacturing Company, Ltd.
46952
5
Nikon Corporation
7256
5
Other owners 336