H03H
Impedance networks
Official title: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P)
H03H (Impedance networks) appears on 28,668 US grants and 24,588 published applications in this corpus.
Search patents in H03H- Granted patents
- 28,668
- Published applications
- 24,588
- Assignees
- 4,701
- Inventors
- 33,116
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 205 | 0 |
| 1977 | 226 | 0 |
| 1978 | 157 | 0 |
| 1979 | 140 | 0 |
| 1980 | 171 | 0 |
| 1981 | 194 | 0 |
| 1982 | 221 | 0 |
| 1983 | 171 | 0 |
| 1984 | 203 | 0 |
| 1985 | 200 | 0 |
| 1986 | 227 | 0 |
| 1987 | 247 | 0 |
| 1988 | 241 | 0 |
| 1989 | 247 | 0 |
| 1990 | 221 | 0 |
| 1991 | 257 | 0 |
| 1992 | 260 | 0 |
| 1993 | 279 | 0 |
| 1994 | 324 | 0 |
| 1995 | 313 | 0 |
| 1996 | 343 | 0 |
| 1997 | 317 | 0 |
| 1998 | 415 | 0 |
| 1999 | 462 | 0 |
| 2000 | 426 | 0 |
| 2001 | 423 | 182 |
| 2002 | 545 | 642 |
| 2003 | 564 | 624 |
| 2004 | 592 | 766 |
| 2005 | 565 | 800 |
| 2006 | 658 | 679 |
| 2007 | 583 | 807 |
| 2008 | 609 | 778 |
| 2009 | 671 | 775 |
| 2010 | 687 | 916 |
| 2011 | 759 | 903 |
| 2012 | 709 | 907 |
| 2013 | 884 | 933 |
| 2014 | 919 | 978 |
| 2015 | 1026 | 913 |
| 2016 | 974 | 943 |
| 2017 | 1001 | 1228 |
| 2018 | 1042 | 1188 |
| 2019 | 1345 | 1369 |
| 2020 | 1415 | 1376 |
| 2021 | 1068 | 1241 |
| 2022 | 1045 | 1297 |
| 2023 | 1018 | 1349 |
| 2024 | 1103 | 1233 |
| 2025 | 1142 | 1021 |
| 2026 | 854 | 740 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- H03H 9/00Networks comprising electromechanical or electro-acoustic elements11,584
- H03H 7/00Multiple-port networks comprising only passive electrical elements as network components8,170
- H03H 11/00Networks using active elements4,427
- H03H 3/00Apparatus or processes specially adapted for the manufacture of impedance networks, resonating4,021
- H03H 17/00Networks using digital techniques3,339
- H03H 1/00Constructional details of impedance networks whose electrical mode of operation is not2,165
- H03H 21/00Adaptive networks1,014
- H03H 19/00Networks using time-varying elements737
All 18 main groupsShow fewer
- H03H 2210/00Indexing scheme relating to details of tunable filtersIndexing code582
- H03H 15/00Transversal filters425
- H03H 2218/00Indexing scheme relating to details of digital filtersIndexing code224
- H03H 5/00One-port networks comprising only passive electrical elements as network components194
- H03H 2/00Networks using elements or techniques not provided for in groups h03h3/00 -182
- H03H 2250/00Indexing scheme relating to dual- or multi-band filtersIndexing code174
- H03H 2240/00Indexing scheme relating to filter banksIndexing code53
- H03H 2220/00Indexing scheme relating to structures of digital filtersIndexing code44
- H03H 2222/00Indexing scheme relating to digital filtering methodsIndexing code29
- H03H 2260/00Theory relating to impedance networksIndexing code20
Recent patents
- MEMS resonator6 Oct 2026US 12,753,070 B2SiTime Corporation
- Adiabatic circuits for cold scalable electronics6 Oct 2026US 12,754,878 B2Zettaflops LLC
- Resonance device and manufacturing method for the same6 Oct 2026US 12,756,371 B2Murata Manufacturing Co., Ltd.
- Packaged acoustic wave devices with multilayer piezoelectric substrate6 Oct 2026US 12,756,372 B2Skyworks Solutions, Inc.
- Multilayer electronic component6 Oct 2026US 12,756,373 B2TDK Corporation
- Impedance transforming tapered couplers8 Oct 2026US 2026/0312271 A1Qorvo US, Inc.
- Method for producing a donor substrate for transferring a piezoelectric layer onto a carrier substrate8 Oct 2026US 2026/0312560 A1
- Filter, preparation method thereof, and electronic apparatus8 Oct 2026US 2026/0312561 A1Beijing BOE Sensor Technology Co., Ltd.
- Reconfigurable hybrid lattice filter system8 Oct 2026US 2026/0312562 A1Qorvo US, Inc.
- Packaged acoustic wave devices with multi-layer piezoelectric substrate with seal ring spaced from piezoelectric layers8 Oct 2026US 2026/0312563 A1Skyworks Solutions, Inc.
Most cited
By later US patents
- Wireless energy transfer for medical applications551US 8,937,408 B2WiTricity Corporation · 2015
- Signature filter system544US 4,944,036 A1990
- Surface acoustic wave device mounted module473US 5,459,368 AMatsushita Electric Industrial Co., Ltd. · 1995
- Method and apparatus for estimating physiological parameters using model-based adaptive filtering457US 5,853,364 ANellcor Puritan Bennett LLC · 1998
- Wireless energy transfer using planar capacitively loaded conducting loop resonators449US 8,035,255 B2WiTricity Corporation · 2011