- All sections
- G - Physics
- G01L - Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure
- G01L 21/02 - Vacuum gauges having a compression chamber in which gas, whose pressure is to be measured, is compressed
Patent holdings for IPC class G01L 21/02
Total number of patents in this class: 39
10-year publication summary
|
2
|
2
|
4
|
1
|
1
|
3
|
4
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4333 |
3 |
| National Research Council of Canada | 1546 |
3 |
| INFICON Holding AG | 178 |
2 |
| Qualcomm Incorporated | 92563 |
1 |
| Baker Hughes Incorporated | 4922 |
1 |
| LG Electronics Inc. | 75845 |
1 |
| Pratt & Whitney Canada Corp. | 5511 |
1 |
| Nokia Corporation | 4761 |
1 |
| GM Global Technology Operations LLC | 16170 |
1 |
| Koninklijke Philips N.V. | 25895 |
1 |
| Applied Materials, Inc. | 20438 |
1 |
| Alcatel-Lucent USA Inc. | 525 |
1 |
| Tokyo Electron Limited | 13843 |
1 |
| Motorola, Inc. | 1241 |
1 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8471 |
1 |
| Cochlear Limited | 2006 |
1 |
| DSP Group Ltd. | 164 |
1 |
| Epsis AS | 6 |
1 |
| Meyer Sound Laboratories, Incorporated | 124 |
1 |
| MKS Instruments, Inc. | 548 |
1 |
| Other owners | 14 |