- 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
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2
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2
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4
|
1
|
1
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2
|
3
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dolby Laboratories Licensing Corporation | 4231 |
3 |
| National Research Council of Canada | 1579 |
3 |
| INFICON Holding AG | 179 |
2 |
| Qualcomm Incorporated | 88555 |
1 |
| Baker Hughes Incorporated | 5140 |
1 |
| LG Electronics Inc. | 74262 |
1 |
| Pratt & Whitney Canada Corp. | 5050 |
1 |
| Nokia Corporation | 5231 |
1 |
| GM Global Technology Operations LLC | 15564 |
1 |
| Koninklijke Philips N.V. | 25323 |
1 |
| Applied Materials, Inc. | 19577 |
1 |
| Alcatel-Lucent USA Inc. | 544 |
1 |
| Tokyo Electron Limited | 13336 |
1 |
| Motorola, Inc. | 1604 |
1 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8475 |
1 |
| Cochlear Limited | 1933 |
1 |
| DSP Group Ltd. | 165 |
1 |
| Epsis AS | 6 |
1 |
| Meyer Sound Laboratories, Incorporated | 120 |
1 |
| MKS Instruments, Inc. | 580 |
1 |
| Other owners | 14 |