H04R 1/20
Arrangements for obtaining desired frequency or directional characteristics
Official title: Arrangements for obtaining desired frequency or directional characteristics (for stereophonic purpose H04R5/00)
H04R1/20 (Arrangements for obtaining desired frequency or directional characteristics) appears on 12,031 US grants and 13,129 published applications in this corpus.
Search patents in H04R- Granted patents
- 12,031
- Published applications
- 13,129
- Assignees
- 2,821
- Inventors
- 17,990
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 42 | 0 |
| 1978 | 31 | 0 |
| 1979 | 52 | 0 |
| 1980 | 46 | 0 |
| 1981 | 37 | 0 |
| 1982 | 42 | 0 |
| 1983 | 35 | 0 |
| 1984 | 46 | 0 |
| 1985 | 36 | 0 |
| 1986 | 41 | 0 |
| 1987 | 32 | 0 |
| 1988 | 31 | 0 |
| 1989 | 61 | 0 |
| 1990 | 46 | 0 |
| 1991 | 46 | 0 |
| 1992 | 56 | 0 |
| 1993 | 48 | 0 |
| 1994 | 53 | 0 |
| 1995 | 32 | 0 |
| 1996 | 47 | 0 |
| 1997 | 35 | 0 |
| 1998 | 66 | 0 |
| 1999 | 65 | 0 |
| 2000 | 59 | 0 |
| 2001 | 59 | 30 |
| 2002 | 65 | 87 |
| 2003 | 76 | 78 |
| 2004 | 75 | 136 |
| 2005 | 46 | 151 |
| 2006 | 84 | 161 |
| 2007 | 76 | 200 |
| 2008 | 77 | 194 |
| 2009 | 88 | 234 |
| 2010 | 101 | 224 |
| 2011 | 150 | 220 |
| 2012 | 295 | 308 |
| 2013 | 251 | 358 |
| 2014 | 296 | 379 |
| 2015 | 374 | 472 |
| 2016 | 464 | 565 |
| 2017 | 585 | 701 |
| 2018 | 662 | 850 |
| 2019 | 960 | 996 |
| 2020 | 974 | 1062 |
| 2021 | 924 | 1096 |
| 2022 | 950 | 1017 |
| 2023 | 915 | 1106 |
| 2024 | 923 | 1033 |
| 2025 | 899 | 799 |
| 2026 | 544 | 672 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- User identification with audio earbuds6 Oct 2026US 12,755,745 B2Intel Corporation
- Personalized, real-time audio processing6 Oct 2026US 12,755,748 B2eBay Inc.
- TWS including planar speaker incorporating circuit-embedded vibrator, dynamic speaker, and microphone6 Oct 2026US 12,756,969 B2
- System and method for generating an audio signal6 Oct 2026US 12,756,970 B2Sonicedge Ltd.
- Electronic device6 Oct 2026US 12,756,971 B2Lenovo (Beijing) Limited
- Method of Assembling An Elliptical Transducer8 Oct 2026US 2026/0311669 A1QorTek, Inc.
- Elliptical Transducers8 Oct 2026US 2026/0311670 A1QorTek, Inc.
- Generation of an audiovisual signal8 Oct 2026US 2026/0313236 A1Koninklijke Philips N. V.
- Earphone8 Oct 2026US 2026/0313280 A1Shenzhen Dancing Future Technology Ltd.
- Loudspeaker drive unit8 Oct 2026US 2026/0313287 A1Genelec Oy
Most cited
By later US patents
- Headset for electronic stethoscope956US 5,561,275 ADelstar Services Informatiques (1993) Inc. · 1996
- Localized projection of audible noises in medical settings525US 10,388,120 B2Masimo Corporation · 2019
- Sound localization system for teleconferencing using self-steering microphone arrays423US 5,335,011 ABell Communications Research, Inc. · 1994
- Orientation-responsive acoustic driver selection405US 8,934,647 B2Bose Corporation · 2015
- Orientation-responsive use of acoustic reflection403US 8,934,655 B2Bose Corporation · 2015