H04L 2027/0053
Closed loops
Official title: {Closed loops}
H04L2027/0053 (Closed loops) appears on 1,069 US grants and 778 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,069
- Published applications
- 778
- Assignees
- 377
- Inventors
- 1,583
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 10 | 0 |
| 1996 | 19 | 0 |
| 1997 | 19 | 0 |
| 1998 | 37 | 0 |
| 1999 | 28 | 0 |
| 2000 | 32 | 0 |
| 2001 | 41 | 17 |
| 2002 | 41 | 72 |
| 2003 | 48 | 64 |
| 2004 | 60 | 61 |
| 2005 | 47 | 44 |
| 2006 | 59 | 39 |
| 2007 | 57 | 98 |
| 2008 | 51 | 80 |
| 2009 | 64 | 48 |
| 2010 | 64 | 33 |
| 2011 | 51 | 24 |
| 2012 | 49 | 36 |
| 2013 | 32 | 20 |
| 2014 | 35 | 23 |
| 2015 | 27 | 19 |
| 2016 | 17 | 19 |
| 2017 | 24 | 16 |
| 2018 | 18 | 14 |
| 2019 | 19 | 14 |
| 2020 | 11 | 6 |
| 2021 | 8 | 8 |
| 2022 | 10 | 4 |
| 2023 | 6 | 8 |
| 2024 | 0 | 4 |
| 2025 | 9 | 4 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus, method, and computer program for coordinating interdependent closed loops14 Jul 2026US 12,683,861 B2Nokia Solutions and Networks Oy
- Method for replying with response frame, apparatus, and access point system23 Dec 2025US 12,507,213 B2Huawei Technologies Co., Ltd.
- Kalman filter based phase-locked loop with re-encoding based phase detector25 Nov 2025US 12,483,380 B2Silicon Laboratories Inc.
- Method and system for transmission of auxiliary data using reconfigurable intelligent surfaces18 Nov 2025US 12,476,694 B2Sequans Communications
- Carrier phase tracking method and device for orthogonal frequency division multiplexing multi-carrier system30 Sep 2025US 12,432,106 B2Datang Mobile Communications Equipment Co., Ltd.
- S1g duplicate mode classification methods and wireless communication devices in a wireless network11 Jun 2026US 2026/0164310 A2Morse Micro Pty. Ltd.
- Kalman filter based phase-locked loop with re-encoding based phase detector16 Apr 2026US 2026/0106782 A1Silicon Laboratories Inc.
- S1g duplicate mode classification methods and wireless communication devices in a wireless network15 Jan 2026US 2026/0019882 A1Morse Micro Pty. Ltd.
- Ai-based digital pre-distortion for digital envelope tracking power amplifiers25 Dec 2025US 2025/0392498 A1Samsung Electronics Co., Ltd.
- Receiver architecture demodulating 4n-qam directly in analog domain without analog-to-digital converter (adc)22 May 2025US 2025/0168051 A1The Regents of the University of California
Most cited
By later US patents
- Code division multiple access (CDMA) communication system333US 6,157,619 AInterDigital Technology Corporation · 2000
- Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith320US 6,275,990 B1ADC Telecommunications, Inc. · 2001
- Channel selection for a hybrid fiber coax network264US 6,334,219 B1ADC Telecommunications, Inc. · 2001
- Dynamic bandwidth allocation220US 7,069,577 B2SDC Telecommunications, Inc. · 2006
- Dynamic bandwidth allocation205US 6,279,158 B1ADC Telecommunications, Inc. · 2001