- All sections
- G - Physics
- G01N - Investigating or analysing materials by determining their chemical or physical properties
- G01N 21/81 - Indicating humidity
Patent holdings for IPC class G01N 21/81
Total number of patents in this class: 137
10-year publication summary
|
10
|
12
|
12
|
13
|
14
|
15
|
10
|
12
|
3
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kimberly-clark Worldwide, Inc. | 5511 |
5 |
| Kyodo Printing Co., Ltd. | 152 |
5 |
| Healthy.io Ltd | 80 |
4 |
| Samsung Electronics Co., Ltd. | 141952 |
3 |
| 3m Innovative Properties Company | 17857 |
3 |
| The Boeing Company | 19951 |
3 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3867 |
3 |
| Siemens Healthcare Diagnostics Inc. | 2029 |
3 |
| Conopco, Inc. | 4907 |
2 |
| The Regents of the University of California | 19675 |
2 |
| International Business Machines Corporation | 60549 |
2 |
| Carrier Corporation | 4372 |
2 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 4831 |
2 |
| Bartec Benke GmbH | 12 |
2 |
| Dräger Safety AG & Co. KGaA | 417 |
2 |
| Ewha University-industry Collaboration Foundation | 702 |
2 |
| Flex Ltd. | 219 |
2 |
| IUCF-HYU (Industry-University Cooperation Foundation Hanyang University) | 1318 |
2 |
| Korea Research Institute of Chemical Technology | 1357 |
2 |
| MANN+HUMMEL GmbH | 1742 |
2 |
| Other owners | 84 |