E01F 8/0094
Constructions for generation of phase shifting
Official title: {constructions for generation of phase shifting}
E01F8/0094 (Constructions for generation of phase shifting) appears on 10 US grants and 9 published applications in this corpus.
Search patents in E01F- Granted patents
- 10
- Published applications
- 9
- Assignees
- 13
- Inventors
- 32
- Latest grant
- 10 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Road with sound diffractors15 Apr 2014US 8,696,233 B24Silence B.V.
- Active sound reduction apparatus and active noise insulation wall having same3 Nov 2009US 7,613,307 B2Mitsubishi Heavy Industries, Ltd.
- Noise reducing equipment3 Jun 2008US 7,380,636 B2
- Reconfigurable acoustic metamaterials, reconfigurable noise barriers, and methods of tuning noise barriers26 Mar 2026US 2026/0085479 A1Purdue Research Foundation
- Interference noise-control unit17 Mar 2022US 2022/0081855 A1Wavebreaker AB
- Diffractor for diffracting sound15 Dec 2016US 2016/0362855 A14Silence B.V.
- Road with sound diffractors18 Oct 2012US 2012/0263524 A1Universiteit Twente
- Noise reduction device12 Jun 2008US 2008/0135328 A1MK Seiko Co., Ltd.
Most cited
By later US patents
- Sound-absorbing structure30US 4,244,439 AElektronikcentralen · 1981
- Sound absorbing structure20US 6,568,135 B1Alumu Corporation · 2003
- Muffling wall6US 6,173,806 B1Itoon · 2001
- Active device for attenuating the intensity of sound4US 6,463,156 B1Comptoir De La Technologie · 2002
- Enfolding sound barrier4US 6,810,991 B12004