H04M 9/027
Frequency division multiplex systems
Official title: {Frequency division multiplex systems}
H04M9/027 (Frequency division multiplex systems) appears on 111 US grants and 120 published applications in this corpus.
Search patents in H04M- Granted patents
- 111
- Published applications
- 120
- Assignees
- 31
- Inventors
- 85
- Latest grant
- 8 Oct 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 6 | 1 |
| 2002 | 9 | 12 |
| 2003 | 8 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 3 | 0 |
| 2007 | 1 | 53 |
| 2008 | 19 | 30 |
| 2009 | 11 | 14 |
| 2010 | 6 | 1 |
| 2011 | 8 | 2 |
| 2012 | 6 | 2 |
| 2013 | 4 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Terminal apparatus, base station apparatus, communication method, and integrated circuit8 Oct 2019US 10,436,842 B2Sharp Kabushiki Kaisha
- Systems and method for orthogonal frequency divisional multiplexing28 Jul 2015US 9,094,842 B2HTC Corporation
- Systems and method for orthogonal frequency divisional multiplexing28 Jan 2014US 8,638,655 B2HTC Corporation
- Systems and method for orthogonal frequency division multiplexing5 Nov 2013US 8,576,693 B2HTC Corporation
- Systems and methods for orthogonal frequency divisional multiplexing1 Oct 2013US 8,547,824 B2HTC Corporation
- Terminal apparatus, base station apparatus, communication method, and integrated circuit5 Oct 2017US 2017/0285105 A1Sharp Kabushiki Kaisha
- Systems and method for orthogonal frequency divisional multiplexing17 Apr 2014US 2014/0105263 A1HTC Corporation
- Systems and method for orthogonal frequency divisional multiplexing16 May 2013US 2013/0121131 A1
- Systems and methods for orthogonal frequency divisional multiplexing2 Aug 2012US 2012/0195184 A1HTC Corporation
- Systems and method for orthogonal frequency division multiplexing29 Mar 2012US 2012/0076183 A1HTC Corporation
Most cited
By later US patents
- 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
- Multi-point to point communication system with remote unit burst identification186US 6,330,241 B1ADC Telecommunications, Inc. · 2001