H04R 1/2838
Of the bandpass type
Official title: {of the bandpass type}
H04R1/2838 (Of the bandpass type) appears on 630 US grants and 708 published applications in this corpus.
Search patents in H04R- Granted patents
- 630
- Published applications
- 708
- Assignees
- 278
- Inventors
- 1,129
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 3 |
| 2002 | 7 | 7 |
| 2003 | 3 | 3 |
| 2004 | 6 | 11 |
| 2005 | 0 | 7 |
| 2006 | 9 | 13 |
| 2007 | 6 | 15 |
| 2008 | 3 | 14 |
| 2009 | 7 | 16 |
| 2010 | 7 | 15 |
| 2011 | 11 | 13 |
| 2012 | 14 | 11 |
| 2013 | 15 | 15 |
| 2014 | 15 | 19 |
| 2015 | 13 | 21 |
| 2016 | 16 | 24 |
| 2017 | 27 | 40 |
| 2018 | 43 | 36 |
| 2019 | 37 | 27 |
| 2020 | 31 | 48 |
| 2021 | 42 | 73 |
| 2022 | 51 | 52 |
| 2023 | 54 | 72 |
| 2024 | 64 | 65 |
| 2025 | 56 | 39 |
| 2026 | 24 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for suppressing sound leakage8 Sep 2026US 12,732,760 B2Shenzhen Shokz Co., Ltd.
- Earphone and earphone assembly18 Aug 2026US 12,713,175 B2Beijing Xiaomi Mobile Software Co., Ltd.
- Acoustic output device and components thereof4 Aug 2026US 12,701,349 B2Shenzhen Shokz Co., Ltd.
- Systems and methods for suppressing sound leakage14 Jul 2026US 12,684,300 B2Shenzhen Shokz Co., Ltd.
- Miniature loudspeaker30 Jun 2026US 12,671,937 B2Merry Electronics (Suzhou) Co., Ltd.
- Valved Port24 Sep 2026US 2026/0292394 A1Apple Inc.
- Grille integrated acoustic filter3 Sep 2026US 2026/0261794 A1Qsc, LLC
- Open-Ear Headphone with Energy-Directing Nozzle20 Aug 2026US 2026/0247066 A1
- Acoustic output devices13 Aug 2026US 2026/0238908 A1Shenzhen Shokz Co., Ltd.
- Speaker assemblies and earphones13 Aug 2026US 2026/0238919 A1Shenzhen Shokz Co., Ltd.
Most cited
By later US patents
- Bass reproduction speaker apparatus213US 5,588,065 AMasushita Electric Industrial Co., Ltd. · 1996
- Headphone192US 8,098,872 B22012
- Dual element headphone150US 4,418,248 AKoss Corporation · 1983
- Electroacoustical transducing with at least three cascaded subchambers84US 5,092,424 ABose Corporation · 1992
- Multiple porting loudspeaker systems83US 4,549,631 ABose Corporation · 1985