H03H 7/01
Frequency selective two-port networks
H03H7/01 (Frequency selective two-port networks) appears on 3,825 US grants and 3,881 published applications in this corpus.
Search patents in H03H- Granted patents
- 3,825
- Published applications
- 3,881
- Assignees
- 1,188
- Inventors
- 6,106
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 14 | 0 |
| 1984 | 12 | 0 |
| 1985 | 3 | 0 |
| 1986 | 10 | 0 |
| 1987 | 5 | 0 |
| 1988 | 16 | 0 |
| 1989 | 16 | 0 |
| 1990 | 13 | 0 |
| 1991 | 19 | 0 |
| 1992 | 20 | 0 |
| 1993 | 21 | 0 |
| 1994 | 14 | 0 |
| 1995 | 16 | 0 |
| 1996 | 26 | 0 |
| 1997 | 15 | 0 |
| 1998 | 25 | 0 |
| 1999 | 29 | 0 |
| 2000 | 42 | 0 |
| 2001 | 30 | 11 |
| 2002 | 39 | 80 |
| 2003 | 64 | 70 |
| 2004 | 62 | 73 |
| 2005 | 67 | 66 |
| 2006 | 51 | 67 |
| 2007 | 51 | 71 |
| 2008 | 56 | 80 |
| 2009 | 53 | 80 |
| 2010 | 68 | 117 |
| 2011 | 78 | 114 |
| 2012 | 83 | 100 |
| 2013 | 91 | 149 |
| 2014 | 136 | 171 |
| 2015 | 179 | 199 |
| 2016 | 176 | 177 |
| 2017 | 199 | 245 |
| 2018 | 257 | 210 |
| 2019 | 275 | 298 |
| 2020 | 289 | 308 |
| 2021 | 232 | 223 |
| 2022 | 224 | 218 |
| 2023 | 186 | 231 |
| 2024 | 176 | 217 |
| 2025 | 209 | 178 |
| 2026 | 143 | 128 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03H 7/0115Comprising only inductors and capacitors1,624
- H03H 7/17Structural details of sub-circuits of frequency selective networks1,362
- H03H 7/0153Electrical filters711
- H03H 7/09Filters comprising mutual inductance709
- H03H 7/06Including resistors501
- H03H 2007/013Notch or bandstop filtersIndexing code311
- H03H 7/0138Electrical filters or coupling circuits287
- H03H 7/0123Comprising distributed impedance elements together with lumped impedance elements263
All 14 subgroupsShow fewer
Recent patents
- Multilayer electronic component6 Oct 2026US 12,756,373 B2TDK Corporation
- Filter and filter module6 Oct 2026US 12,756,374 B2Murata Manufacturing Co., Ltd.
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- LC filter, multiplexer, high frequency module, and communication device22 Sep 2026US 12,744,146 B2Murata Manufacturing Co., Ltd.
- RF Phase Shifter22 Sep 2026US 12,744,314 B2Telefonaktiebolaget LM Ericsson (publ)
- Filter, preparation method thereof, and electronic apparatus8 Oct 2026US 2026/0312561 A1Beijing BOE Sensor Technology Co., Ltd.
- Magnetoresistance effect element1 Oct 2026US 2026/0302032 A1TDK Corporation
- Lc filter, diplexer, high frequency module, and communication device1 Oct 2026US 2026/0302088 A1Murata Manufacturing Co., Ltd.
- Integrated common-mode filter core for open-ended winding electric motor1 Oct 2026US 2026/0303049 A1Purdue Research Foundation
- Diplexer1 Oct 2026US 2026/0303050 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- Tunable filter and method of tuning a filter328US 6,778,023 B2Nokia Corporation · 2004
- Automatic antenna tuning method and circuit299US 5,491,715 ATexas Instruments Deutschland GmbH · 1996
- Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active implantable medical devices251US 7,363,090 B2Greatbatch Ltd. · 2008
- Tunable horn antenna238US 6,867,744 B2Kyocera Wireless Corp. · 2005
- RF notch filter having multiple notch and variable notch frequency characteristics212US 6,020,783 ASignal Technology Corporation · 2000