- All sections
- H - Electricity
- H04B - Transmission
- H04B 10/142 - Coherent homodyne or heterodyne systems
Patent holdings for IPC class H04B 10/142
Total number of patents in this class: 32
10-year publication summary
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NEC Corporation | 32703 |
6 |
Fujitsu Limited | 19265 |
2 |
Fujitsu Optical Components Limited | 266 |
2 |
Mitsubishi Electric Corporation | 43934 |
2 |
Nippon Telegraph and Telephone Corporation | 14195 |
2 |
NEC Laboratories America, Inc. | 995 |
2 |
Panasonic Corporation | 20786 |
1 |
Matsushita Electric Industrial Co., Ltd. | 4724 |
1 |
Sumitomo Electric Industries, Ltd. | 14131 |
1 |
Hewlett-Packard Development Company, L.P. | 28538 |
1 |
Electronics and Telecommunications Research Institute | 8830 |
1 |
Rockwell Collins, Inc. | 2402 |
1 |
Fujikura Ltd. | 2777 |
1 |
The Furukawa Electric Co., Ltd. | 3486 |
1 |
Infinera Corporation | 620 |
1 |
Nokia Siemens Networks Oy | 1582 |
1 |
Sumitomo Osaka Cement Co., Ltd. | 783 |
1 |
Textron Systems Corporation | 157 |
1 |
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration | 527 |
1 |
University of New Brunswick | 146 |
1 |
Other owners | 2 |