- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/55 - Specular reflectivity
Patent holdings for IPC class G01N 21/55
Total number of patents in this class: 2147
10-year publication summary
153
|
141
|
153
|
119
|
106
|
111
|
114
|
75
|
92
|
9
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Koninklijke Philips Electronics N.V. | 10767 |
49 |
KLA-Tencor Corporation | 2550 |
44 |
Applied Materials, Inc. | 17808 |
30 |
Canon Inc. | 38296 |
29 |
Samsung Electronics Co., Ltd. | 139551 |
24 |
GE Healthcare Bio-Sciences AB | 554 |
22 |
3m Innovative Properties Company | 17976 |
20 |
ASML Netherlands B.V. | 7190 |
20 |
Onto Innovation Inc. | 354 |
16 |
The Regents of the University of California | 19572 |
15 |
Ricoh Company, Ltd. | 13230 |
15 |
Koninklijke Philips N.V. | 24106 |
15 |
Corning Incorporated | 10145 |
15 |
Centre National de La Recherche Scientifique | 10140 |
14 |
Robert Bosch GmbH | 41843 |
13 |
KLA Corporation | 1406 |
12 |
The Boeing Company | 19922 |
11 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 40717 |
11 |
Carl Zeiss SMT GmbH | 2831 |
11 |
Apple Inc. | 52932 |
10 |
Other owners | 1751 |