F05D 2270/333
Noise or sound levels
F05D2270/333 (Noise or sound levels) appears on 64 US grants and 92 published applications in this corpus.
Search patents in F05D- Granted patents
- 64
- Published applications
- 92
- Assignees
- 46
- Inventors
- 190
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 3 |
| 2014 | 2 | 0 |
| 2015 | 0 | 3 |
| 2016 | 0 | 8 |
| 2017 | 2 | 5 |
| 2018 | 5 | 10 |
| 2019 | 9 | 5 |
| 2020 | 5 | 13 |
| 2021 | 4 | 5 |
| 2022 | 5 | 2 |
| 2023 | 7 | 9 |
| 2024 | 9 | 11 |
| 2025 | 10 | 13 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid fluid systems for turbine engines1 Sep 2026US 12,723,521 B2General Electric Company
- Geared gas turbine engine with improved noise signature28 Jul 2026US 12,692,823 B2ROLLS-ROYCE plc
- Liquid fluid systems including phase detection sensors for turbine engines10 Mar 2026US 12,571,327 B2General Electric Company
- Low noise turbine for geared turbofan engine9 Dec 2025US 12,492,664 B2MTU Aero Engines AG
- Method of optimizing the noise generated in flight by a rotorcraft25 Nov 2025US 12,479,588 B2Airbus Helicopters
- Method for Information Exchange Between an External Recipient and a Pump2 Jul 2026US 2026/0185531 A1KSB SE & Co. KGaA
- Liquid fluid systems for turbine engines28 May 2026US 2026/0146545 A1General Electric Company
- Low noise turbine for gas turbine engine5 Mar 2026US 2026/0063079 A1MTU Aero Engines AG
- Gas turbine engine having a heat exchanger located in an annular duct30 Oct 2025US 2025/0334087 A1General Electric Company
- Gas turbine engine having a heat exchanger located in an annular duct30 Oct 2025US 2025/0334088 A1General Electric Company
Most cited
By later US patents
- Low noise turbine for geared turbofan engine84US 8,246,292 B1MTU Aero Engines AG · 2012
- Turbofan engine having variable geometry fan duct33US 4,155,221 AThe Boeing Company · 1979
- Gas turbine engine with differing effective perceived noise levels at differing reference points and methods for operating gas turbine engine8US 10,590,851 B1ROLLS-ROYCE plc · 2020
- Geared gas turbine engine7US 10,975,802 B2ROLLS-ROYCE plc · 2021
- Low noise compressor rotor for geared turbofan engine7US 8,632,301 B2United Technologies Corporation · 2014