- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 3/44 - Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system
Patent holdings for IPC class G01N 3/44
Total number of patents in this class: 40
10-year publication summary
|
1
|
3
|
1
|
4
|
1
|
0
|
2
|
0
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21309 |
2 |
| Mitutoyo Corporation | 1259 |
2 |
| Myoton AS | 12 |
2 |
| Plastometrex Ltd | 6 |
2 |
| The Regents of the University of California | 20815 |
1 |
| Centre National de La Recherche Scientifique | 11059 |
1 |
| Robert Bosch GmbH | 44254 |
1 |
| Massachusetts Institute of Technology | 10282 |
1 |
| Corning Incorporated | 10504 |
1 |
| Dow AgroSciences LLC | 1180 |
1 |
| Board of Regents, The University of Texas System | 6141 |
1 |
| Battelle Memorial Institute | 2608 |
1 |
| Bar-Ilan University | 452 |
1 |
| Biosensia Patents Limited | 5 |
1 |
| Brown University | 688 |
1 |
| ChemImage Corporation | 129 |
1 |
| College de France | 134 |
1 |
| Ecole Normale Superieure | 132 |
1 |
| The Hong Kong University of Science and Technology | 840 |
1 |
| KLA-Tencor Corporation | 2517 |
1 |
| Other owners | 16 |