H01P 1/383
Junction circulators
Official title: Junction circulators, e.g. Y-circulators
H01P1/383 (Junction circulators) appears on 501 US grants and 407 published applications in this corpus.
Search patents in H01P- Granted patents
- 501
- Published applications
- 407
- Assignees
- 169
- Inventors
- 665
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 13 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 12 | 0 |
| 1999 | 13 | 0 |
| 2000 | 14 | 0 |
| 2001 | 8 | 13 |
| 2002 | 15 | 37 |
| 2003 | 33 | 21 |
| 2004 | 27 | 24 |
| 2005 | 27 | 11 |
| 2006 | 9 | 19 |
| 2007 | 11 | 4 |
| 2008 | 7 | 8 |
| 2009 | 7 | 16 |
| 2010 | 16 | 18 |
| 2011 | 10 | 8 |
| 2012 | 14 | 9 |
| 2013 | 13 | 13 |
| 2014 | 11 | 14 |
| 2015 | 13 | 21 |
| 2016 | 18 | 24 |
| 2017 | 22 | 21 |
| 2018 | 20 | 24 |
| 2019 | 16 | 24 |
| 2020 | 20 | 9 |
| 2021 | 14 | 17 |
| 2022 | 9 | 7 |
| 2023 | 8 | 18 |
| 2024 | 11 | 15 |
| 2025 | 13 | 7 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stacked double junction circulator device and methods for fabrication4 Aug 2026US 12,700,653 B2TTM Technologies, Inc.
- Electrical filter topology21 Jul 2026US 12,689,406 B2Telefonaktiebolaget LM Ericsson (publ)
- Folded circulator device with coupling elements and flex connections for interconnects and methods of fabricating the circulator device14 Jul 2026US 12,683,261 B2TTM Technologies, Inc.
- Precision ferrite-based electromagnetic signal circulators for quantum computing systems16 Jun 2026US 12,657,501 B2Google Inc.
- Non-reciprocal circuit21 Apr 2026US 12,609,430 B2Mitsubishi Electric Corporation
- Radio frequency front-end module with embedded circulators18 Jun 2026US 2026/0173253 A1
- Magnet-less circulator for hybrid-classical qubit read-out systems with built-in phase modulation23 Apr 2026US 2026/0111779 A1Dell Products L. P.
- Four-port circulator16 Apr 2026US 2026/0106363 A1Sichuan University
- Thermalized pocketed cryogenic circulator with ground tuning19 Mar 2026US 2026/0081334 A1Google Inc.
- Precision Ferrite-Based Electromagnetic Signal Circulators for Quantum Computing Systems12 Mar 2026US 2026/0073266 A1Google Inc.
Most cited
By later US patents
- 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
- Compact lumped constant non-reciprocal circuit element79US 5,164,687 ARenaissance Electronics Corporation · 1992
- Nonreciprocal circuit device and composite electronic component63US 5,945,887 AMurata Manufacturing Co., Ltd. · 1999
- Isolator/circulator having propeller resonator loaded with a plurality of symmetric magnetic walls56US 6,646,515 B2EG Co., Ltd. · 2003
- Embedded planar circulator40US 6,611,180 B1Raytheon Company · 2003