- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
Patent holdings for IPC class G01N 21/31
Total number of patents in this class: 4011
10-year publication summary
|
253
|
286
|
339
|
302
|
376
|
378
|
344
|
361
|
328
|
66
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21125 |
116 |
| Shimadzu Corporation | 6283 |
41 |
| Schlumberger Technology Corporation | 11326 |
36 |
| Samsung Electronics Co., Ltd. | 152016 |
32 |
| Siemens Healthcare Diagnostics Inc. | 2125 |
29 |
| Trinamix GmbH | 416 |
26 |
| Koninklijke Philips N.V. | 25421 |
24 |
| Centre National de La Recherche Scientifique | 10820 |
20 |
| Saudi Arabian Oil Company | 13886 |
20 |
| Hitachi High-Tech Corporation | 5593 |
20 |
| Altria Client Services LLC | 2331 |
19 |
| Canon Inc. | 41835 |
18 |
| Panasonic Intellectual Property Management Co., Ltd. | 33120 |
18 |
| Seiko Epson Corporation | 19851 |
17 |
| Yokogawa Electric Corporation | 1842 |
17 |
| Applied Materials, Inc. | 19802 |
16 |
| Dräger Safety AG & Co. KGaA | 459 |
16 |
| Siemens AG | 24337 |
15 |
| Repligen Corporation | 293 |
15 |
| Fresenius Medical Care Holdings, Inc. | 1434 |
14 |
| Other owners | 3482 |