- All sections
- G - Physics
- G01L - Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure
- G01L 21/12 - Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured measuring changes in electric resistance of measuring members, e.g. of filamentsVacuum gauges of the Pirani type
Patent holdings for IPC class G01L 21/12
Total number of patents in this class: 71
10-year publication summary
|
2
|
5
|
6
|
7
|
4
|
3
|
10
|
6
|
6
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MKS Instruments, Inc. | 652 |
13 |
| Edwards Limited | 791 |
6 |
| Ambature, Inc. | 34 |
4 |
| Institut National D'optique | 308 |
4 |
| Tokyo Electron Limited | 12681 |
3 |
| ULVAC, Inc. | 1380 |
3 |
| Applied Materials, Inc. | 18565 |
2 |
| JPMorgan Chase Bank, National Association | 8554 |
2 |
| Canon Anelva Technix Corporation | 7 |
2 |
| INFICON AG | 24 |
2 |
| Todos Technologies Ltd. | 13 |
2 |
| Teledyne Flir, LLC | 524 |
2 |
| Centre National de La Recherche Scientifique | 10418 |
1 |
| Eastman Kodak Company | 2903 |
1 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10928 |
1 |
| Brooks Automation, Inc. | 160 |
1 |
| Canon Anelva Corporation | 686 |
1 |
| Ecole Centrale de Lille | 51 |
1 |
| Global OLED Technology LLC | 506 |
1 |
| INFICON GmbH | 42 |
1 |
| Other owners | 18 |