H01P 1/171
Using a corrugated or ridged waveguide section
Official title: {using a corrugated or ridged waveguide section}
H01P1/171 (Using a corrugated or ridged waveguide section) appears on 39 US grants and 37 published applications in this corpus.
Search patents in H01P- Granted patents
- 39
- Published applications
- 37
- Assignees
- 39
- Inventors
- 94
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 2 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 4 |
| 2019 | 5 | 5 |
| 2020 | 2 | 6 |
| 2021 | 4 | 2 |
| 2022 | 3 | 2 |
| 2023 | 2 | 0 |
| 2024 | 2 | 2 |
| 2025 | 2 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wideband septum polarizer for reducing higher order mode3 Feb 2026US 12,542,339 B2Intellian Technologies Inc.
- Active phased array with integrated antennas and circuits on common printed circuit cards27 Jan 2026US 12,537,314 B2CesiumAstro, Inc.
- Longitudinally ridged quad polarizer feed30 Dec 2025US 12,512,596 B1Lockheed Martin Corporation
- Waveguide horn antenna8 Jul 2025US 12,355,149 B1Utah State University Space Dynamics Laboratory
- Three waveguide diplexer operating over two frequency ranges and including a three conductor transmission device coupled between the three waveguides of the diplexer17 Sep 2024US 12,095,133 B2Mti Wireless Edge, Ltd.
- Compact mode converter waveguide13 Nov 2025US 2025/0349486 A1Varian Medical Systems, Inc.
- Active Phased Array with Integrated Antennas and Circuits on Common Printed Circuit Cards26 Jun 2025US 2025/0210882 A1CesiumAstro, Inc.
- Wideband Septum Polarizer for Reducing Higher Order Mode15 Aug 2024US 2024/0275007 A1Intellian Technologies Inc.
- Apparatus and system for splitting and combining signals in the frequency domain27 Jun 2024US 2024/0213642 A1Nokia Shanghai Bell Co., Ltd.
- Diplexer for antennas23 Jun 2022US 2022/0200122 A1Mti Wireless Edge, Ltd.
Most cited
By later US patents
- High power waveguide polarizer with broad bandwidth and low loss, and methods of making and using same18US 8,248,178 B2The Aerospace Corporation · 2012
- Corrugated ridge waveguide phase shifting structure16US 4,725,795 AHughes Aircraft Company · 1988
- Dual band frequency polarizer using corrugated geometry profile7US 6,563,470 B2Northrop Grumman Corporation · 2003
- Linear-to-circular polarizer antenna6US 11,211,675 B22021
- Birefringent corrugated waveguide6US 4,906,951 AUnited States Department of Energy · 1990