H04L 1/18
Automatic repetition systems
Official title: Automatic repetition systems, e.g. Van Duuren systems
H04L1/18 (Automatic repetition systems) appears on 23,758 US grants and 29,851 published applications in this corpus.
Search patents in H04L- Granted patents
- 23,758
- Published applications
- 29,851
- Assignees
- 2,022
- Inventors
- 17,538
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 8 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 11 | 0 |
| 1990 | 13 | 0 |
| 1991 | 12 | 0 |
| 1992 | 20 | 0 |
| 1993 | 19 | 0 |
| 1994 | 13 | 0 |
| 1995 | 32 | 0 |
| 1996 | 40 | 0 |
| 1997 | 47 | 0 |
| 1998 | 51 | 0 |
| 1999 | 66 | 0 |
| 2000 | 84 | 0 |
| 2001 | 82 | 39 |
| 2002 | 92 | 252 |
| 2003 | 131 | 348 |
| 2004 | 123 | 343 |
| 2005 | 168 | 463 |
| 2006 | 262 | 522 |
| 2007 | 233 | 546 |
| 2008 | 285 | 661 |
| 2009 | 332 | 765 |
| 2010 | 457 | 901 |
| 2011 | 578 | 781 |
| 2012 | 767 | 833 |
| 2013 | 918 | 972 |
| 2014 | 1033 | 1061 |
| 2015 | 1040 | 1290 |
| 2016 | 1200 | 1296 |
| 2017 | 1155 | 1156 |
| 2018 | 1080 | 1481 |
| 2019 | 1343 | 1849 |
| 2020 | 1537 | 2247 |
| 2021 | 1624 | 2193 |
| 2022 | 1722 | 2797 |
| 2023 | 1839 | 2461 |
| 2024 | 2186 | 2065 |
| 2025 | 1960 | 1512 |
| 2026 | 1160 | 1017 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 1/1829Arrangements specially adapted for the receiver end12,400
- H04L 1/1867Arrangements specially adapted for the transmitter end11,836
- H04L 1/1812Hybrid protocols10,451
- H04L 1/1822Involving configuration of automatic repeat request [arq] with parallel processes2,343
- H04L 1/1825Adaptation of specific arq protocol parameters according to transmission conditions1,237
- H04L 1/1809Selective-repeat protocols970
- H04L 1/1803Stop-and-wait protocols252
- H04L 1/1806Go-back-n protocols93
Recent patents
- Method and apparatus for radio sidelink operation over shared spectrum6 Oct 2026US 12,756,444 B2InterDigital Patent Holdings, Inc.
- Method, device, and system for reducing receiving-end RLC processing load through highly reliable HARQ feedback-based RLC retransmission6 Oct 2026US 12,756,500 B2Samsung Electronics Co., Ltd.
- Schemes on disabling HARQ feedback6 Oct 2026US 12,756,501 B2MediaTek Singapore Pte. Ltd.
- Sub-slot based codebook construction techniques6 Oct 2026US 12,756,502 B2Zte Corporation
- Hybrid automatic repeat request disabled operation6 Oct 2026US 12,756,503 B2QUALCOMM Incorporated
- Systems and methods for updating energy storage management software in embedded systems8 Oct 2026US 2026/0310442 A1Electra Vehicles, Inc.
- Techniques for network coding based on device storage8 Oct 2026US 2026/0312730 A1QUALCOMM Incorporated
- Mrb architecture with pdcp retransmission8 Oct 2026US 2026/0312733 A1QUALCOMM Incorporated
- Hybrid automatic repeat request (harq)-acknowledgement (ack) codebook type combinations for harq-ack codebook construction and transmission in loose carrier aggregation implementations8 Oct 2026US 2026/0312734 A1QUALCOMM Incorporated
- Bit to constellation mapping for flexible spectrum integration8 Oct 2026US 2026/0312735 A1QUALCOMM Incorporated
Most cited
By later US patents
- System for protecting the transmission of live data streams, and upon reception, for reconstructing the live data streams and recording them into files1,424US 7,024,609 B2Kencast, Inc. · 2006
- Directory enabled policy management tool for intelligent traffic management997US 6,502,131 B1Novell, Inc. · 2002
- Synchronous data communication588US 8,054,752 B2Intuitive Surgical Operations, Inc. · 2011
- Spatio-temporal processing for communication580US 6,144,711 ACisco Systems, Inc. · 2000
- Error correction system for packet switching networks487US 6,031,818 ALucent Technologies Inc. · 2000