- 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 filaments; Vacuum gauges of the Pirani type
Patent holdings for IPC class G01L 21/12
Total number of patents in this class: 77
10-year publication summary
|
6
|
2
|
5
|
6
|
7
|
4
|
3
|
10
|
6
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| MKS Instruments, Inc. | 698 |
12 |
| Edwards Limited | 764 |
6 |
| ULVAC, Inc. | 1448 |
5 |
| Institut National D'optique | 309 |
4 |
| Tokyo Electron Limited | 11599 |
3 |
| Ambature, Inc. | 30 |
3 |
| Applied Materials, Inc. | 16587 |
2 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
2 |
| JPMorgan Chase Bank, National Association | 10964 |
2 |
| Brooks Automation, Inc. | 191 |
2 |
| Canon Anelva Technix Corporation | 7 |
2 |
| INFICON AG | 20 |
2 |
| Todos Technologies Ltd. | 13 |
2 |
| Teledyne Flir, LLC | 549 |
2 |
| Centre National de La Recherche Scientifique | 9632 |
1 |
| Eastman Kodak Company | 3444 |
1 |
| The BOC Group plc | 54 |
1 |
| BSH Bosch und Siemens Hausgerate GmbH | 3236 |
1 |
| Canon Anelva Corporation | 676 |
1 |
| Ecole Centrale de Lille | 56 |
1 |
| Other owners | 22 |