- All sections
- H - Electricity
- H03F - Amplifiers
- H03F 7/04 - Parametric amplifiers using variable-permitivity element
Patent holdings for IPC class H03F 7/04
Total number of patents in this class: 32
10-year publication summary
|
1
|
2
|
2
|
5
|
3
|
3
|
4
|
4
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| International Business Machines Corporation | 60644 |
5 |
| Koninklijke Philips N.V. | 22975 |
2 |
| Microsoft Technology Licensing, LLC | 51439 |
2 |
| The University of Chicago | 1282 |
2 |
| University of Massachusetts | 2130 |
2 |
| Yale University | 2204 |
2 |
| Siemens AG | 24990 |
1 |
| Sony Corporation | 32931 |
1 |
| The Regents of the University of California | 18943 |
1 |
| Koninklijke Philips Electronics N.V. | 13133 |
1 |
| BAE Systems Information and Electronic Systems Integration Inc. | 1760 |
1 |
| D-Wave Systems Inc. | 412 |
1 |
| IBM United Kingdom Limited | 4467 |
1 |
| Newsouth Innovations Pty Limited | 567 |
1 |
| Nuvoton Technology Corporation | 521 |
1 |
| Stichting IMEC Nederland | 179 |
1 |
| Tencent Technology (Shenzhen) Company Limited | 12951 |
1 |
| Circuit Seed, LLC | 14 |
1 |
| Philips Intellectual Property & Standards GmbH | 2395 |
1 |
| IBM Deutschland GmbH | 670 |
1 |
| Other owners | 3 |