- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 9/26 - Investigating density or specific gravity of materialsAnalysing materials by determining density or specific gravity by measuring pressure differences
Patent holdings for IPC class G01N 9/26
Total number of patents in this class: 178
10-year publication summary
|
19
|
12
|
16
|
11
|
11
|
19
|
18
|
18
|
15
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shanghai Roye Electric Co., Ltd. | 40 |
11 |
| Saudi Arabian Oil Company | 12858 |
10 |
| Trafag AG | 52 |
8 |
| Halliburton Energy Services, Inc. | 20749 |
6 |
| Modtech Corp. | 8 |
6 |
| Aramco Services Company | 3910 |
5 |
| WIKA Alexander Wiegand SE & Co. KG | 237 |
5 |
| Hamilton Sundstrand Corporation | 4832 |
4 |
| MicrotracBEL Corporation | 10 |
4 |
| Precision Planting LLC | 1111 |
4 |
| Endress+Hauser Flowtec AG | 805 |
3 |
| Isopure, Corp. | 18 |
3 |
| Micro Motion, Inc. | 1017 |
3 |
| Sartorius Lab Instruments GmbH & Co. KG | 186 |
3 |
| Schneider Electric Systems USA, Inc. | 431 |
3 |
| Anton Paar Quantatec, Inc. | 13 |
3 |
| Baker Hughes Incorporated | 5289 |
2 |
| Honda Motor Co., Ltd. | 25137 |
2 |
| Deere & Company | 7525 |
2 |
| Caterpillar Inc. | 9472 |
2 |
| Other owners | 89 |