F04D 27/0253
By throttling
Official title: {by throttling (F04D27/0246 takes precedence)}
F04D27/0253 (By throttling) appears on 153 US grants and 166 published applications in this corpus.
Search patents in F04D- Granted patents
- 153
- Published applications
- 166
- Assignees
- 92
- Inventors
- 347
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 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 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 5 |
| 2005 | 3 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 4 | 4 |
| 2009 | 1 | 4 |
| 2010 | 2 | 4 |
| 2011 | 4 | 3 |
| 2012 | 5 | 4 |
| 2013 | 2 | 4 |
| 2014 | 3 | 7 |
| 2015 | 2 | 5 |
| 2016 | 3 | 11 |
| 2017 | 10 | 8 |
| 2018 | 7 | 6 |
| 2019 | 9 | 21 |
| 2020 | 17 | 21 |
| 2021 | 11 | 12 |
| 2022 | 16 | 19 |
| 2023 | 12 | 6 |
| 2024 | 16 | 6 |
| 2025 | 6 | 8 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Variable geometry diffuser having extended travel and control method thereof25 Aug 2026US 12,716,427 B2Tyco Fire & Security GmbH
- Centrifugal compressor with energy recovery from a recycle line7 Jul 2026US 12,674,460 B2Nuovo Pignone Tecnologie Srl
- Centrifugal compressor10 Mar 2026US 12,571,401 B2IHI Corporation
- Dynamic rate limiter for load sharing application24 Feb 2026US 12,560,379 B2Saudi Arabian Oil Company
- Interstage capacity control valve with separate drive and stabilization linkages23 Dec 2025US 12,504,025 B1Trane International Inc.
- Systems and methods for operating a compressor of an hvac&r system23 Jul 2026US 2026/0210369 A1Tyco Fire & Security GmbH
- Interstage capacity control valve with separate drive and stabilization linkages23 Apr 2026US 2026/0110309 A1Trane International Inc.
- System and method for operation of variable geometry diffuser as check valve16 Oct 2025US 2025/0321034 A1Tyco Fire & Security GmbH
- Refrigerating system, method for controlling refrigerating system, and storage medium25 Sep 2025US 2025/0297790 A1Carrier Corporation
- Fluid routing for a vacuum pumping system21 Aug 2025US 2025/0266268 A1Edwards Limited
Most cited
By later US patents
- Apparatus and method for regulating a pressure in a chamber203US 5,944,049 AAPPLIED Materials.Inc. · 1999
- Variable geometry guide vane for a gas turbine engine199US 7,632,064 B2United Technologies Corporation · 2009
- Devices and methods of operation thereof for providing stable flow for centrifugal compressors50US 7,326,027 B1The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 2008
- Variable pipe diffuser for centrifugal compressor43US 5,807,071 A1998
- Variable geometry diffuser mechanism40US 6,872,050 B2York International Corporation · 2005