- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 3/40 - Investigating hardness or rebound hardness
Patent holdings for IPC class G01N 3/40
Total number of patents in this class: 314
10-year publication summary
22
|
22
|
26
|
30
|
32
|
20
|
22
|
25
|
16
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Maxell, Ltd. | 2533 |
7 |
Halliburton Energy Services, Inc. | 20165 |
6 |
Centre National de La Recherche Scientifique | 9632 |
5 |
Erweka GmbH | 25 |
5 |
Maxell Holdings, Ltd. | 1422 |
5 |
Hiroshima University | 527 |
4 |
Hysitron, Inc. | 35 |
4 |
JFE Steel Corporation | 6067 |
4 |
Honeywell International Inc. | 13799 |
3 |
Ecole Nationale Superieure de Mecanique et des Microtechniques | 26 |
3 |
Her Majesty The Queen in Right of Canada AS represented by The Minister of Natural Resources Canada | 89 |
3 |
Iml-instrumenta Mechanik Labor GmbH | 37 |
3 |
MARL Technologies Inc. | 12 |
3 |
Universite de Franche-comte | 178 |
3 |
Gregg Drilling, LLC | 9 |
3 |
Samsung Electronics Co., Ltd. | 131630 |
2 |
Schlumberger Canada Limited | 6913 |
2 |
The Regents of the University of California | 18943 |
2 |
The Boeing Company | 19843 |
2 |
Deere & Company | 6845 |
2 |
Other owners | 243 |