H03M 5/12
Biphase level code
Official title: Biphase level code, e.g. split phase code, Manchester code; Biphase space or mark code, e.g. double frequency code
H03M5/12 (Biphase level code) appears on 209 US grants and 115 published applications in this corpus.
Search patents in H03M- Granted patents
- 209
- Published applications
- 115
- Assignees
- 162
- Inventors
- 449
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 14 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 0 |
| 2003 | 5 | 5 |
| 2004 | 3 | 1 |
| 2005 | 6 | 4 |
| 2006 | 3 | 3 |
| 2007 | 1 | 0 |
| 2008 | 2 | 1 |
| 2009 | 2 | 3 |
| 2010 | 2 | 6 |
| 2011 | 3 | 1 |
| 2012 | 4 | 3 |
| 2013 | 2 | 2 |
| 2014 | 6 | 4 |
| 2015 | 6 | 11 |
| 2016 | 8 | 9 |
| 2017 | 10 | 3 |
| 2018 | 8 | 7 |
| 2019 | 13 | 10 |
| 2020 | 11 | 5 |
| 2021 | 4 | 8 |
| 2022 | 9 | 7 |
| 2023 | 6 | 4 |
| 2024 | 4 | 7 |
| 2025 | 5 | 4 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preamble design for ambient-internet of things24 Feb 2026US 12,562,943 B2QUALCOMM Incorporated
- Data encoding in a low frequency magnetic field27 Jan 2026US 12,537,560 B2Metrotech Corporation
- Frame structure for synchronous operation of an ambient internet-of-things device13 Jan 2026US 12,526,102 B2QUALCOMM Incorporated
- Bit error rate estimation and error correction and related systems, methods, devices6 Jan 2026US 12,517,776 B2Microchip Technology Incorporated
- Coding module for a transceiver12 Aug 2025US 12,388,689 B2NXP B. V.
- Device to reader frequency multiplexing with manchester encoding6 Aug 2026US 2026/0231126 A1InterDigital Patent Holdings, Inc.
- ACT Startup Sequence23 Jul 2026US 2026/0213767 A1Infineon Technologies Americas Corp.
- Decoding of a biphase signal in a wireline modem30 Apr 2026US 2026/0121894 A1Schlumberger Technology Corporation
- Data Encoding in a Low Frequency Magnetic Field23 Apr 2026US 2026/0113072 A1Metrotech Corporation
- Automotive ethernet using asymmetric concurrent transmission (ACT)19 Mar 2026US 2026/0081638 A1Infineon Technologies Americas Corp.
Most cited
By later US patents
- Data and voice communications system446US 4,672,605 AApplied Spectrum Technologies, Inc. · 1987
- Method for digital clock recovery from Manchester-encoded signals121US 4,608,702 AAdvanced Micro Devices, Inc. · 1986
- Method and apparatus for decoding F2F signals read from a magnetic data carrier111US 5,434,400 AInternational Business Machines Corporation · 1995
- Digital modulation employing single sideband with suppressed carrier100US 5,930,303 A1999
- Methods and arrangements for transmitting high speed data over reduced bandwidth communication resources93US 6,320,900 B1Compaq Computer Corporation · 2001