Patent holdings for IPC class G01N 23/2251

Total number of patents in this class: 830

10-year publication summary

20
37
63
75
108
96
110
126
93
55
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Principal owners for this class

Owner
All patents
This class
Hitachi High-Tech Corporation
5957
104
ASML Netherlands B.V.
8005
83
KLA Corporation
1874
42
NuFlare Technology, Inc.
927
37
Applied Materials Israel, Ltd.
689
28
FEI Company
1062
28
Samsung Electronics Co., Ltd.
158842
21
Applied Materials, Inc.
20552
20
KLA-Tencor Corporation
2517
17
Carl Zeiss SMT GmbH
3364
15
Saudi Arabian Oil Company
14349
10
TASMIT, Inc.
76
10
LG Chem, Ltd.
17967
8
Techinsights Inc.
98
8
Taiwan Semiconductor Manufacturing Company, Ltd.
48760
7
Carl Zeiss Microscopy GmbH
1290
7
JEOL Ltd.
625
7
JFE Steel Corporation
7617
6
Oxford Instruments NanoTechnology Tools Limited
142
6
The University of Liverpool
317
6
Other owners 360