- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 3/42 - Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
Patent holdings for IPC class G01N 3/42
Total number of patents in this class: 392
10-year publication summary
|
39
|
32
|
27
|
40
|
27
|
24
|
30
|
21
|
18
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitutoyo Corporation | 1249 |
29 |
| Saudi Arabian Oil Company | 13263 |
12 |
| Illinois Tool Works Inc. | 11485 |
11 |
| Hysitron, Inc. | 35 |
11 |
| Anton Paar Tritec SA | 16 |
8 |
| Bruker Nano, Inc. | 341 |
8 |
| National Institute of Advanced Industrial Science and Technology | 3789 |
6 |
| Helmut Fischer GmbH Institut fur Elektronik und Messtechnik | 166 |
5 |
| The Regents of the University of California | 19989 |
4 |
| Rohm and Haas Company | 2884 |
4 |
| Dow Global Technologies LLC | 10371 |
4 |
| Atomic Energy of Canada Limited | 130 |
4 |
| DEKA Products Limited Partnership | 1775 |
4 |
| KLA-Tencor Corporation | 2544 |
4 |
| Massachusetts Materials Technologies LLC | 14 |
4 |
| Shenyang Tianxing Testing Instruments Co., Ltd. | 5 |
4 |
| Sol Solution | 27 |
4 |
| TDW Delaware, Inc. | 168 |
4 |
| Centre National de La Recherche Scientifique | 10465 |
3 |
| Sumitomo Rubber Industries, Ltd. | 4657 |
3 |
| Other owners | 256 |