- 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: 2130
10-year publication summary
|
154
|
141
|
153
|
120
|
106
|
111
|
116
|
78
|
95
|
25
|
| 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. | 10060 |
49 |
| KLA-Tencor Corporation | 2546 |
44 |
| Applied Materials, Inc. | 18383 |
31 |
| Canon Inc. | 39365 |
30 |
| Samsung Electronics Co., Ltd. | 143812 |
25 |
| GE Healthcare Bio-Sciences AB | 547 |
22 |
| ASML Netherlands B.V. | 7301 |
20 |
| 3m Innovative Properties Company | 17842 |
19 |
| Onto Innovation Inc. | 359 |
16 |
| The Regents of the University of California | 19803 |
15 |
| Ricoh Company, Ltd. | 13215 |
15 |
| Koninklijke Philips N.V. | 24527 |
15 |
| Corning Incorporated | 10232 |
14 |
| Robert Bosch GmbH | 42411 |
13 |
| Centre National de La Recherche Scientifique | 10311 |
12 |
| Carl Zeiss SMT GmbH | 2935 |
12 |
| KLA Corporation | 1503 |
12 |
| The Boeing Company | 19994 |
11 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42036 |
11 |
| Apple Inc. | 54416 |
10 |
| Other owners | 1734 |