H01P 1/219
Evanescent mode filters
H01P1/219 (Evanescent mode filters) appears on 33 US grants and 18 published applications in this corpus.
Search patents in H01P- Granted patents
- 33
- Published applications
- 18
- Assignees
- 26
- Inventors
- 77
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 4 | 0 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Microwave or millimeter wave passive components or devices16 Jun 2026US 12,658,545 B2Ecole Polytechnique Federale De Lausanne (Epfl)
- Combline waveguide filter including cavity resonators coupled by irises, where the cavity resonators are each defined by a shape that is non-rectangular24 Mar 2026US 12,586,882 B2Swissto12 SA
- Power-efficient microwave plasma jet based on evanescent-mode cavity technology11 Feb 2025US 12,224,474 B2The University of Toledo
- Waveguide filter comprising a waveguide cavity defined by plural sidewalls and plural ridges, where any given ridge is attached to a corresponding sidewall20 Aug 2024US 12,068,517 B2Optisys, Inc.
- Waveguide filter comprising a waveguide cavity defined by plural sidewalls and formed by a metal additive manufacturing technique having a specified overhang angle20 Aug 2024US 12,068,518 B2Optisys, Inc.
- Comb waveguide filter18 Jan 2024US 2024/0021969 A1Swissto12 SA
- Power-Efficient Microwave Plasma Jet Based on Evanescent-Mode Cavity Technology8 Jun 2023US 2023/0178868 A1The University of Toledo
- Microwave or millimeter wave passive components or devices13 Apr 2023US 2023/0109939 A1Ecole Polytechnique Federale De Lausanne (Epfl)
- Evanescent mode waveguide filter3 Nov 2022US 2022/0352614 A1Optisys, Inc.
- Evanescent mode waveguide filter3 Nov 2022US 2022/0352615 A1Optisys, Inc.
Most cited
By later US patents
- Embedded ridge waveguide filters54US 6,535,083 B1Northrop Grumman Corporation · 2003
- Resonant wave filter40US 4,837,535 AUniden Corporation · 1989
- Multilayer dielectric evanescent mode waveguide filter utilizing via holes32US 6,137,383 AMerrimac Industries, Inc. · 2000
- Multilayer dielectric evanescent mode waveguide filter32US 6,154,106 AMerrimac Industries, Inc. · 2000
- Filter with dielectric resonators25US 4,757,289 ANEC Corporation · 1988