H01P 1/2136
Using comb or interdigital filters
Official title: {using comb or interdigital filters; using cascaded coaxial cavities (H01P1/2131, H01P1/2135 take precedence)}
H01P1/2136 (Using comb or interdigital filters) appears on 248 US grants and 145 published applications in this corpus.
Search patents in H01P- Granted patents
- 248
- Published applications
- 145
- Assignees
- 77
- Inventors
- 309
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 10 | 0 |
| 2000 | 7 | 0 |
| 2001 | 14 | 2 |
| 2002 | 23 | 36 |
| 2003 | 31 | 23 |
| 2004 | 29 | 8 |
| 2005 | 13 | 3 |
| 2006 | 3 | 3 |
| 2007 | 0 | 4 |
| 2008 | 3 | 1 |
| 2009 | 4 | 3 |
| 2010 | 2 | 8 |
| 2011 | 2 | 3 |
| 2012 | 6 | 2 |
| 2013 | 0 | 3 |
| 2014 | 3 | 5 |
| 2015 | 6 | 7 |
| 2016 | 7 | 4 |
| 2017 | 3 | 2 |
| 2018 | 4 | 8 |
| 2019 | 3 | 3 |
| 2020 | 10 | 5 |
| 2021 | 2 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 6 | 4 |
| 2025 | 1 | 2 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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.
- Switchable filter11 Aug 2026US 12,706,362 B2Kmw Inc.
- Hybrid type filter solution14 Jul 2026US 12,683,259 B2Telefonaktiebolaget LM Ericsson (publ)
- Dielectric waveguide port coupling structure including a metalized dielectric block having a blind groove with a transmission line disposed therein10 Feb 2026US 12,548,874 B2Telefonaktiebolaget LM Ericsson (publ)
- AU and RU having CWG filters, and BS having the AU or RU18 Mar 2025US 12,255,375 B2Telefonaktiebolaget LM Ericsson (publ)
- Filter, antenna apparatus, and communication device20 Aug 2026US 2026/0246129 A1Huawei Technologies Co., Ltd.
- Radio frequency filters covered by feed boards19 Jun 2025US 2025/0202087 A1CommScope Italy S.r.l.
- Communication device24 Apr 2025US 2025/0132480 A1Telefonaktiebolaget LM Ericsson (publ)
- Communication apparatus28 Nov 2024US 2024/0396197 A1Huawei Technologies Co., Ltd.
- Dielectric waveguide port coupling structure, a dielectric waveguide filter, a duplexer and a multiplexer25 Jul 2024US 2024/0250399 A1Telefonaktiebolaget LM Ericsson (pub)
Most cited
By later US patents
- Multiple resonator dielectric filter110US 4,692,726 AMotorola, Inc. · 1987
- Surface mount filter with integral transmission line connection99US 4,879,533 AMotorola, Inc. · 1989
- Duplexer filter having harmonic rejection to control flyback93US 5,023,866 AMotorola, Inc. · 1991
- Antenna filtering arrangement for a dual mode radio communication device83US 6,185,434 B2LK-Products Oy · 2001
- Dielectric duplexer with different capacitive coupling between antenna pad and transmitting and receiving sections76US 6,052,040 ANgk Spark Plug Co., Ltd. · 2000