H01P 3/12
Hollow waveguides
Official title: Hollow waveguides (H01P3/20 takes precedence)
H01P3/12 (Hollow waveguides) appears on 1,106 US grants and 1,221 published applications in this corpus.
Search patents in H01P- Granted patents
- 1,106
- Published applications
- 1,221
- Assignees
- 496
- Inventors
- 2,082
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 1 |
| 2002 | 7 | 14 |
| 2003 | 7 | 7 |
| 2004 | 13 | 12 |
| 2005 | 10 | 8 |
| 2006 | 10 | 3 |
| 2007 | 8 | 12 |
| 2008 | 2 | 8 |
| 2009 | 10 | 21 |
| 2010 | 7 | 22 |
| 2011 | 17 | 33 |
| 2012 | 16 | 17 |
| 2013 | 22 | 37 |
| 2014 | 35 | 42 |
| 2015 | 31 | 43 |
| 2016 | 56 | 72 |
| 2017 | 49 | 77 |
| 2018 | 79 | 93 |
| 2019 | 105 | 116 |
| 2020 | 111 | 127 |
| 2021 | 99 | 70 |
| 2022 | 72 | 104 |
| 2023 | 75 | 81 |
| 2024 | 85 | 86 |
| 2025 | 60 | 67 |
| 2026 | 59 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Microwave networks, waveguides, mixing carts, methods of supplying gas, and gas management systems for radiation therapy machines6 Oct 2026US 12,752,245 B2Varian Medical Systems, Inc.
- Waveguide element operable up to terahertz frequencies including a dielectric portion having periodic holes of a specified period formed therein and which is mounted on a support substrate6 Oct 2026US 12,756,080 B2NGK Insulators, Ltd.
- Waveguide device operable up to terahertz frequencies including a line substrate having periodic holes formed therein and which is mounted on a support substrate29 Sep 2026US 12,749,785 B2NGK Insulators, Ltd.
- Metal integrated suspended line (MISL) circuits29 Sep 2026US 12,750,947 B2Tianjin University
- Millimeter wave structure including a shielded substrate having a metal sheet therein and usable in a millimeter wave measurement module22 Sep 2026US 12,744,295 B2Universal Scientific Industrial (Shanghai) Co., Ltd.
- Signal transmission structure for signal transmission in multi-layer circuit board and electronic device including the same8 Oct 2026US 2026/0312270 A1Samsung Electronics Co., Ltd.
- Waveguides and fabrication thereof1 Oct 2026US 2026/0302580 A1Jones Microwave Inc
- Waveguide device, microwave outdoor unit, and long-haul microwave transmission device24 Sep 2026US 2026/0291044 A1
- Multilayer substrate and electronic device17 Sep 2026US 2026/0280090 A1Murata Manufacturing Co., Ltd.
- Deployable eletromagnetic waveguides17 Sep 2026US 2026/0280091 A1The Penn State Research Foundation
Most cited
By later US patents
- Dielectric transmission medium connector and methods for use therewith479US 9,853,342 B2AT&T Intellectual Property I, L. P. · 2017
- Method and apparatus for launching a wave mode that mitigates interference475US 9,608,740 B2AT&T Intellectual Property I, L. P. · 2017
- Method and apparatus for launching a wave mode that mitigates interference473US 9,882,257 B2AT&T Intellectual Property I, L. P. · 2018
- At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric471US 9,871,282 B2AT&T Intellectual Property I, L. P. · 2018
- Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium465US 9,640,850 B2AT&T Intellectual Property I, L. P. · 2017