- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 69/321 - Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers
Patent holdings for IPC class H04L 69/321
Total number of patents in this class: 142
10-year publication summary
|
2
|
4
|
2
|
2
|
5
|
27
|
25
|
29
|
32
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Intel Corporation | 45621 |
14 |
| VMware LLC | 6078 |
12 |
| Convida Wireless, LLC | 616 |
8 |
| Nicira, Inc. | 1192 |
8 |
| Samsung Electronics Co., Ltd. | 131630 |
7 |
| Qualcomm Incorporated | 76576 |
5 |
| LG Electronics Inc. | 69257 |
5 |
| Huawei Technologies Co., Ltd. | 100781 |
5 |
| Citrix Systems, Inc. | 3905 |
5 |
| CACI, Inc. - Federal | 86 |
4 |
| Microsoft Technology Licensing, LLC | 51439 |
3 |
| Panasonic Intellectual Property Corporation of America | 7230 |
2 |
| The Trustees of Columbia University in the City of New York | 3440 |
2 |
| Nokia Technologies Oy | 15057 |
2 |
| Akamai Technologies, Inc. | 728 |
2 |
| Cox Communications, Inc. | 471 |
2 |
| Grass Valley Canada | 242 |
2 |
| Sparkle CS Ltd | 10 |
2 |
| UMBRA Technologies Ltd. | 43 |
2 |
| Epiroc Rock Drills Aktiebolag | 405 |
2 |
| Other owners | 48 |