H04B 10/272
Star-type networks or tree-type networks
Official title: Star-type networks {or tree-type networks}
H04B10/272 (Star-type networks or tree-type networks) appears on 992 US grants and 1,065 published applications in this corpus.
Search patents in H04B- Granted patents
- 992
- Published applications
- 1,065
- Assignees
- 306
- Inventors
- 1,676
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 14 | 0 |
| 1995 | 10 | 0 |
| 1996 | 12 | 0 |
| 1997 | 9 | 0 |
| 1998 | 11 | 0 |
| 1999 | 14 | 0 |
| 2000 | 6 | 0 |
| 2001 | 12 | 3 |
| 2002 | 18 | 36 |
| 2003 | 10 | 16 |
| 2004 | 9 | 10 |
| 2005 | 10 | 13 |
| 2006 | 15 | 19 |
| 2007 | 14 | 74 |
| 2008 | 27 | 51 |
| 2009 | 23 | 42 |
| 2010 | 17 | 28 |
| 2011 | 22 | 39 |
| 2012 | 42 | 58 |
| 2013 | 46 | 48 |
| 2014 | 41 | 60 |
| 2015 | 64 | 57 |
| 2016 | 43 | 52 |
| 2017 | 64 | 54 |
| 2018 | 47 | 45 |
| 2019 | 50 | 30 |
| 2020 | 33 | 34 |
| 2021 | 35 | 50 |
| 2022 | 42 | 54 |
| 2023 | 47 | 76 |
| 2024 | 73 | 42 |
| 2025 | 34 | 48 |
| 2026 | 23 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Line concentrator optical communication apparatus and control method25 Aug 2026US 12,719,601 B2NTT, Inc.
- High-capacity channel for higher speed passive optical networks14 Jul 2026US 12,683,704 B2MaxLinear, Inc.
- Systems and methods for optimization of transmission signal quality in point-to-multipoint networks23 Jun 2026US 12,666,182 B2Infinera Corporation
- Systems and methods for optimization of transmission signal quality in point-to-multipoint networks23 Jun 2026US 12,666,183 B2Infinera Corporation
- Systems and methods for optimization of transmission signal quality in point-to-multipoint networks16 Jun 2026US 12,659,631 B2Infinera Corporation
- Optical Communication System And Reset Method24 Sep 2026US 2026/0291622 A1Nippon Telegraph and Telephone Corporation
- Optical distribution network with coexisting passive optical network and coherent passive optical network10 Sep 2026US 2026/0269943 A1Cable Television Laboratories, Inc.
- Signal compensation method, electronic device, and passive optical network system13 Aug 2026US 2026/0238343 A1Zte Corporation
- Apparatus and method for upstream transmission in a coherent pon13 Aug 2026US 2026/0238348 A1Nokia Solutions and Networks Oy
- Optical splitter of passive optical network and optical signal processing method6 Aug 2026US 2026/0230183 A1Zte Corporation
Most cited
By later US patents
- Optical communications network466US 4,977,593 ABritish Telecommunications plc · 1990
- 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
- Optical data distribution network with listen-while-talk capabilities232US 4,573,215 AWestinghouse Electric Corp. · 1986
- Dynamic bandwidth allocation220US 7,069,577 B2SDC Telecommunications, Inc. · 2006