Patent holdings for IPC class G01N 23/2251

Total number of patents in this class: 725

10-year publication summary

10
20
37
63
74
107
96
108
126
54
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Hitachi High-Tech Corporation
5323
95
ASML Netherlands B.V.
7392
70
NuFlare Technology, Inc.
845
35
KLA Corporation
1555
31
Applied Materials Israel, Ltd.
611
24
FEI Company
944
21
Samsung Electronics Co., Ltd.
146346
19
Applied Materials, Inc.
18658
18
KLA-Tencor Corporation
2544
17
Carl Zeiss SMT GmbH
2979
14
Saudi Arabian Oil Company
13185
10
TASMIT, Inc.
65
9
Techinsights Inc.
94
8
Carl Zeiss Microscopy GmbH
1205
7
JFE Steel Corporation
6852
6
National Institute for Materials Science
1105
6
LG Chem, Ltd.
17638
5
Taiwan Semiconductor Manufacturing Company, Ltd.
42804
5
Nikon Corporation
7170
5
BP Corporation North America Inc.
744
5
Other owners 315