H01P 5/181
The guides being hollow waveguides
Official title: {the guides being hollow waveguides}
H01P5/181 (The guides being hollow waveguides) appears on 134 US grants and 108 published applications in this corpus.
Search patents in H01P- Granted patents
- 134
- Published applications
- 108
- Assignees
- 94
- Inventors
- 310
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 3 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 2 | 3 |
| 2012 | 4 | 2 |
| 2013 | 2 | 2 |
| 2014 | 0 | 1 |
| 2015 | 2 | 3 |
| 2016 | 5 | 6 |
| 2017 | 5 | 8 |
| 2018 | 8 | 13 |
| 2019 | 14 | 14 |
| 2020 | 14 | 16 |
| 2021 | 13 | 10 |
| 2022 | 10 | 2 |
| 2023 | 7 | 2 |
| 2024 | 0 | 8 |
| 2025 | 3 | 4 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Frequency steered phased array antenna26 May 2026US 12,640,473 B2Korea Institute of Fusion Energy
- Compact feed system with developable waveguide H-plane directional coupler14 Apr 2026US 12,603,407 B2European Space Agency (ESA)
- Radar level gauge system propagating multiple individually generated transmit signals by a common antenna24 Mar 2026US 12,584,779 B2Rosemount Tank Radar AB
- Module for measuring current/voltage/power of plasma apparatus and plasma apparatus including the same17 Mar 2026US 12,580,167 B2Koreas Institute of Fusion Energy
- Waveguide tuner with signal coupler-divider16 Dec 2025US 12,500,325 B1
- Directional coupler14 May 2026US 2026/0135283 A1Furuno Electric Co., Ltd.
- Plasma generator by means of resonant waveguide19 Mar 2026US 2026/0081110 A1Korea Institute of Fusion Energy
- Directional coupler23 Oct 2025US 2025/0329910 A1
- Waveguide coupler with self-contained polarization rotation for integrated waveguides, circuits, and systems29 May 2025US 2025/0174871 A1
- Frequency steered phased array antenna20 Mar 2025US 2025/0096462 A1Korea Institute of Fusion Energy
Most cited
By later US patents
- Methods and apparatus for adjusting a phase of electromagnetic waves324US 10,205,212 B2AT&T Intellectual Property I, L. P. · 2019
- Simplified wide-band autotrack traveling wave coupler230US 5,410,318 ATRW Inc. · 1995
- Metal plate for preventing radiowave leakage through an aperture in a waveguide body220US 8,222,977 B2NEC Corporation · 2012
- Structure comprising at least a first element bonded to a carrier having a closed metallic channel waveguide formed therein206US 10,276,909 B2Invensas Bonding Technologies, Inc. · 2019
- Flared dielectric coupling system and methods for use therewith190US 10,446,899 B2AT&T Intellectual Property I, L. P. · 2019