F15D 1/04
Arrangements of guide vanes in pipe elbows or duct bends
Official title: Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow
F15D1/04 (Arrangements of guide vanes in pipe elbows or duct bends) appears on 151 US grants and 146 published applications in this corpus.
Search patents in F15D- Granted patents
- 151
- Published applications
- 146
- Assignees
- 131
- Inventors
- 318
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 3 |
| 2004 | 2 | 6 |
| 2005 | 3 | 3 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 3 | 7 |
| 2009 | 0 | 4 |
| 2010 | 2 | 3 |
| 2011 | 5 | 2 |
| 2012 | 7 | 5 |
| 2013 | 5 | 6 |
| 2014 | 4 | 6 |
| 2015 | 3 | 3 |
| 2016 | 3 | 4 |
| 2017 | 3 | 6 |
| 2018 | 1 | 3 |
| 2019 | 4 | 10 |
| 2020 | 6 | 13 |
| 2021 | 9 | 10 |
| 2022 | 8 | 18 |
| 2023 | 10 | 10 |
| 2024 | 14 | 8 |
| 2025 | 11 | 4 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Low solidity coalescing tube bundle elbow15 Sep 2026US 12,736,072 B2Hamilton Sundstrand Corporation
- Apparatuses, systems, and methods for efficient fluid transfer18 Aug 2026US 12,710,064 B2Amptech Innovations LLC
- Insert piece for inserting into a channel section of an angled piece16 Jun 2026US 12,655,858 B2Norma Germany GmbH
- Flow-optimized line connector, and line connector assembly26 May 2026US 12,638,118 B2Norma Germany GmbH
- Coordinated flow pipe elbow17 Mar 2026US 12,577,972 B2The United States of America as represented by the Secretary of the Air Force
- Flow-optimized line connector, and line connector assembly10 Sep 2026US 2026/0266407 A1Norma Germany GmbH
- Flow-optimized line connector, and line connector assembly10 Sep 2026US 2026/0266408 A1Norma Germany GmbH
- Method and apparatus for controlling a liquid23 Apr 2026US 2026/0114208 A1ASM IP Holding B. V.
- Flow ducts, flow assemblies, and methods comprising flow ducts5 Feb 2026US 2026/0036149 A1Bulk Accelerator
- Duct structure having guide vane15 Jan 2026US 2026/0016029 A1Korea Western Power Co., Ltd.
Most cited
By later US patents
- Mechanism to reduce turning losses in conduits106US 5,213,138 AUnited Technologies Corporation · 1993
- Flow duct for the flue gas of a flue gas-cleaning plant102US 4,919,170 AFlachglas Aktiengesellschaft · 1990
- Device for improving the flow profile in a gas line38US 4,142,413 AN.V. Nederlandse Gasunie · 1979
- Elbow provided with guide vanes37US 5,531,484 A1996
- Wind direction adjusting device37US 5,577,958 AMitsubishi Denki Kabushiki Kaisha · 1996