H04B 1/707
Using direct sequence modulation
Official title: using direct sequence modulation
H04B1/707 (Using direct sequence modulation) appears on 9,170 US grants and 7,363 published applications in this corpus.
Search patents in H04B- Granted patents
- 9,170
- Published applications
- 7,363
- Assignees
- 1,671
- Inventors
- 9,667
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 10 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 11 | 0 |
| 1986 | 10 | 0 |
| 1987 | 23 | 0 |
| 1988 | 6 | 0 |
| 1989 | 20 | 0 |
| 1990 | 35 | 0 |
| 1991 | 35 | 0 |
| 1992 | 59 | 0 |
| 1993 | 63 | 0 |
| 1994 | 79 | 0 |
| 1995 | 62 | 0 |
| 1996 | 91 | 0 |
| 1997 | 122 | 0 |
| 1998 | 221 | 0 |
| 1999 | 254 | 0 |
| 2000 | 248 | 0 |
| 2001 | 281 | 172 |
| 2002 | 305 | 599 |
| 2003 | 385 | 589 |
| 2004 | 437 | 592 |
| 2005 | 372 | 519 |
| 2006 | 578 | 440 |
| 2007 | 461 | 437 |
| 2008 | 426 | 428 |
| 2009 | 416 | 418 |
| 2010 | 431 | 358 |
| 2011 | 413 | 253 |
| 2012 | 400 | 268 |
| 2013 | 449 | 289 |
| 2014 | 372 | 321 |
| 2015 | 371 | 256 |
| 2016 | 272 | 217 |
| 2017 | 207 | 180 |
| 2018 | 194 | 187 |
| 2019 | 226 | 191 |
| 2020 | 235 | 166 |
| 2021 | 178 | 131 |
| 2022 | 109 | 91 |
| 2023 | 111 | 100 |
| 2024 | 72 | 69 |
| 2025 | 66 | 59 |
| 2026 | 27 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04B 1/7097Interference-related aspects3,894
- H04B 1/7073Synchronisation aspects2,811
- H04B 1/709Correlator structure1,596
- H04B 2001/70706Using a code tracking loopIndexing code124
- H04B 1/70712With demodulation by means of convolvers74
- H04B 1/70718With asynchronous demodulation, i.e. not requiring code synchronisation42
- H04B 2001/70724Featuring pilot assisted receptionIndexing code36
Recent patents
- Transporting sampled analog signals over multiple electromagnetic pathways6 Oct 2026US 12,756,421 B2HYPHY USA Inc.
- Spread spectrum control method and apparatus25 Aug 2026US 12,719,524 B2Huawei Technologies Co., Ltd.
- Wireless communication device and method that utilize spread spectrum modulation to hide vendor information11 Aug 2026US 12,706,633 B2Realtek Semiconductor Corp.
- Method and apparatus for active terminal detection using spread code learned by using deep learning in multiple communications11 Aug 2026US 12,707,290 B2Seoul National University R&Db Foundation
- Timing detection method, communication system and receiving apparatus21 Jul 2026US 12,689,407 B2NTT, Inc.
- Exploitation of Pilot Signals for Blind Resilient Detection and Geo-Observable Estimation of Navigation Signals24 Sep 2026US 2026/0287755 A1
- Method and apparatus for signal interference processing24 Sep 2026US 2026/0292861 A1ISCO International, LLC
- Wireless transmission of samples encoded using spread spectrum video transport17 Sep 2026US 2026/0280600 A1HYPHY USA Inc.
- Processing device, network node, client device, and methods thereof17 Sep 2026US 2026/0280601 A1Huawei Technologies Co., Ltd.
- Detection of in-band interference17 Sep 2026US 2026/0280955 A1Texas Instruments Incorporated
Most cited
By later US patents
- Analyte monitoring device and methods of use1,821US 6,560,471 B1TheraSense, Inc. · 2003
- System and method for generating signal waveforms in a CDMA cellular telephone system1,721US 5,103,459 AQUALCOMM Incorporated · 1992
- Diversity receiver in a CDMA cellular telephone system825US 5,109,390 AQUALCOMM Incorporated · 1992
- Embedded signalling739US 5,319,735 ABolt Beranek and Newman Inc. · 1994
- Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum691US 5,282,222 A1994