- 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: 3345
10-year publication summary
215
|
244
|
264
|
298
|
350
|
307
|
391
|
370
|
318
|
119
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Halliburton Energy Services, Inc. | 20165 |
112 |
Schlumberger Technology Corporation | 9690 |
32 |
Shimadzu Corporation | 5791 |
29 |
Koninklijke Philips N.V. | 22975 |
23 |
Samsung Electronics Co., Ltd. | 131630 |
21 |
Siemens Healthcare Diagnostics Inc. | 1946 |
20 |
Hitachi High-Tech Corporation | 4424 |
17 |
Schlumberger Canada Limited | 6913 |
16 |
3m Innovative Properties Company | 18406 |
16 |
Siemens AG | 24990 |
16 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
16 |
Altria Client Services LLC | 1866 |
15 |
Canon Inc. | 36841 |
14 |
Ethicon, LLC | 1367 |
14 |
Dräger Safety AG & Co. KGaA | 401 |
13 |
Services Petroliers Schlumberger | 5426 |
13 |
Yokogawa Electric Corporation | 1584 |
13 |
Schlumberger Technology B.v. | 4951 |
12 |
Centre National de La Recherche Scientifique | 9632 |
12 |
Applied Materials, Inc. | 16587 |
12 |
Other owners | 2909 |