H04K 2203/20
For contactless carriers
Official title: for contactless carriers, e.g. RFID carriers
H04K2203/20 (For contactless carriers) appears on 84 US grants and 102 published applications in this corpus.
Search patents in H04K- Granted patents
- 84
- Published applications
- 102
- Assignees
- 67
- Inventors
- 192
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 3 |
| 2005 | 0 | 2 |
| 2006 | 3 | 1 |
| 2007 | 3 | 9 |
| 2008 | 1 | 6 |
| 2009 | 1 | 5 |
| 2010 | 4 | 3 |
| 2011 | 4 | 4 |
| 2012 | 3 | 0 |
| 2013 | 3 | 3 |
| 2014 | 1 | 3 |
| 2015 | 7 | 4 |
| 2016 | 3 | 6 |
| 2017 | 6 | 9 |
| 2018 | 12 | 9 |
| 2019 | 9 | 10 |
| 2020 | 7 | 3 |
| 2021 | 3 | 4 |
| 2022 | 3 | 6 |
| 2023 | 3 | 0 |
| 2024 | 4 | 7 |
| 2025 | 2 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- NR scheme for managing eavesdroppers of passive radios12 May 2026US 12,627,395 B2Nokia Technologies Oy
- Game table reading system27 May 2025US 12,315,331 B2Angel Group Co., Ltd.
- Signal masking for secure backscattered communication22 Apr 2025US 12,284,028 B2Microsoft Technology Licensing, LLC
- Protection of personal data contained on an RFID-enabled device12 Nov 2024US 12,141,640 B2
- Backscatter communication method, excitation device, backscatter device, and receiving device12 Nov 2024US 12,143,143 B2Huawei Technologies Co., Ltd.
- Communication method, first device, and second device11 Sep 2025US 2025/0286755 A1Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Signal masking for secure backscattered communication10 Jul 2025US 2025/0226880 A1Microsoft Technology Licensing, LLC
- Backscatter communication method, excitation device, backscatter device, and receiving device27 Feb 2025US 2025/0070815 A1Huawei Technologies Co., Ltd.
- System, device and method for privacy protection of electronic devices23 Jan 2025US 2025/0031032 A1Cirotta Tech Ltd
- Game table reading system21 Nov 2024US 2024/0386775 A1Angel Group Co., Ltd.
Most cited
By later US patents
- NFC tags with proximity detection274US 9,767,329 B2Avery Dennison Retail Information Services LLC · 2017
- RFID reader for a security system120US 7,057,512 B2InGrid, Inc. · 2006
- System and method for selectively reading RFID devices86US 7,088,248 B2Avery Dennison Corporation · 2006
- Tamper detection system55US 10,127,409 B1Square, Inc. · 2018
- RFID—sensor system for lateral discrimination46US 7,612,675 B22009