- 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: 2151
10-year publication summary
222
|
153
|
141
|
153
|
119
|
106
|
110
|
112
|
71
|
32
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Koninklijke Philips Electronics N.V. | 13133 |
51 |
KLA-Tencor Corporation | 2574 |
45 |
Canon Inc. | 36841 |
30 |
Applied Materials, Inc. | 16587 |
28 |
3m Innovative Properties Company | 18406 |
22 |
GE Healthcare Bio-Sciences AB | 570 |
22 |
Samsung Electronics Co., Ltd. | 131630 |
21 |
ASML Netherlands B.V. | 6816 |
19 |
Corning Incorporated | 9932 |
17 |
The Regents of the University of California | 18943 |
15 |
Centre National de La Recherche Scientifique | 9632 |
15 |
Ricoh Company, Ltd. | 13266 |
15 |
Robert Bosch GmbH | 40953 |
15 |
Koninklijke Philips N.V. | 22975 |
15 |
Onto Innovation Inc. | 340 |
14 |
FUJIFILM Corporation | 27102 |
11 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
11 |
Carl Zeiss SMT GmbH | 2646 |
11 |
Halliburton Energy Services, Inc. | 20165 |
10 |
Konica Minolta, Inc. | 8349 |
10 |
Other owners | 1754 |