H01P 1/213
Combining or separating two or more different frequencies
Official title: combining or separating two or more different frequencies (H01P1/215 takes precedence)
H01P1/213 (Combining or separating two or more different frequencies) appears on 1,052 US grants and 796 published applications in this corpus.
Search patents in H01P- Granted patents
- 1,052
- Published applications
- 796
- Assignees
- 412
- Inventors
- 1,756
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 10 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 4 | 0 |
| 1987 | 10 | 0 |
| 1988 | 8 | 0 |
| 1989 | 12 | 0 |
| 1990 | 12 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 17 | 0 |
| 1994 | 13 | 0 |
| 1995 | 10 | 0 |
| 1996 | 17 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 21 | 0 |
| 2000 | 33 | 0 |
| 2001 | 34 | 15 |
| 2002 | 46 | 82 |
| 2003 | 67 | 54 |
| 2004 | 60 | 36 |
| 2005 | 42 | 29 |
| 2006 | 24 | 22 |
| 2007 | 17 | 19 |
| 2008 | 13 | 12 |
| 2009 | 13 | 24 |
| 2010 | 18 | 42 |
| 2011 | 23 | 33 |
| 2012 | 19 | 23 |
| 2013 | 21 | 19 |
| 2014 | 32 | 25 |
| 2015 | 33 | 23 |
| 2016 | 27 | 36 |
| 2017 | 35 | 36 |
| 2018 | 43 | 36 |
| 2019 | 37 | 41 |
| 2020 | 47 | 42 |
| 2021 | 27 | 29 |
| 2022 | 30 | 31 |
| 2023 | 22 | 21 |
| 2024 | 25 | 31 |
| 2025 | 20 | 16 |
| 2026 | 22 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Radio frequency filters including filter banks formed by plural resonators that are covered by feed boards1 Sep 2026US 12,725,896 B2CommScope Italy S.r.l.
- Compact high power radio frequency polarizer group1 Sep 2026US 12,725,898 B2TibaRay, Inc.
- Wideband TEM to TM01 mode converter for microwave plasma systems25 Aug 2026US 12,719,142 B2APPLIED Materials.Inc.
- Four-port diplexer device25 Aug 2026US 12,719,509 B2Lisa Draexlmaier GmbH
- Switchable filter11 Aug 2026US 12,706,362 B2Kmw Inc.
- Frequency multiplexer suitable for quantum computing24 Sep 2026US 2026/0289370 A1QET Sweden AB
- Filter, antenna apparatus, and communication device20 Aug 2026US 2026/0246129 A1Huawei Technologies Co., Ltd.
- Signal processing circuit with miniaturized dimensions and reduced loss20 Aug 2026US 2026/0246130 A1Mediatek Inc.
- A broadband tunable waveguide filter arrangement6 Aug 2026US 2026/0229758 A1Telefonaktiebolaget LM Ericsson (publ)
- Radio frequency component, antenna system, and base station25 Jun 2026US 2026/0180602 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Apparatus and methods for communicating utilizing an antenna array364US 10,148,016 B2AT&T Intellectual Property I, L. P. · 2018
- System and method for dual-band antenna matching340US 7,180,467 B2Kyocera Wireless Corp. · 2007
- Ka/Ku dual band feedhorn and orthomode transduce (OMT)240US 6,714,165 B2Newtec Cy · 2004
- Tunable horn antenna238US 6,867,744 B2Kyocera Wireless Corp. · 2005
- Multimode coupling system including a funnel-shaped multimode coupler232US 4,030,048 ARCA Corporation · 1977