Patent holdings for IPC class G01N 23/2251

Total number of patents in this class: 575

10-year publication summary

1
9
20
37
63
74
105
95
106
36
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Principal owners for this class

Owner
All patents
This class
Hitachi High-Tech Corporation
4424
81
ASML Netherlands B.V.
6816
52
NuFlare Technology, Inc.
770
31
KLA Corporation
1223
22
Applied Materials Israel, Ltd.
549
17
KLA-Tencor Corporation
2574
17
Applied Materials, Inc.
16587
15
Samsung Electronics Co., Ltd.
131630
14
FEI Company
851
14
Saudi Arabian Oil Company
11322
10
TASMIT, Inc.
52
9
Techinsights Inc.
92
8
Carl Zeiss SMT GmbH
2646
6
JFE Steel Corporation
6067
6
National Institute for Materials Science
1108
6
Nikon Corporation
7162
5
Carl Zeiss Microscopy GmbH
1146
5
Oxford Instruments NanoTechnology Tools Limited
145
5
Hitachi High-Technologies Corporation
2034
4
Nova Measuring Instruments Inc.
59
4
Other owners 244