F16J 15/443
Provided with discharge channels
Official title: {provided with discharge channels}
F16J15/443 (Provided with discharge channels) appears on 64 US grants and 52 published applications in this corpus.
Search patents in F16J- Granted patents
- 64
- Published applications
- 52
- Assignees
- 43
- Inventors
- 141
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 4 |
| 2006 | 0 | 2 |
| 2007 | 3 | 2 |
| 2008 | 3 | 1 |
| 2009 | 2 | 2 |
| 2010 | 1 | 2 |
| 2011 | 2 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 0 | 3 |
| 2015 | 3 | 0 |
| 2016 | 2 | 4 |
| 2017 | 1 | 5 |
| 2018 | 2 | 6 |
| 2019 | 7 | 3 |
| 2020 | 4 | 3 |
| 2021 | 5 | 2 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Piston seal ring bypass31 Mar 2026US 12,590,634 B2Rtx Corporation
- Tool for alignment of seal segments24 Jun 2025US 12,338,745 B2Siemens Energy Global GmbH & Co. KG
- Tool for alignment of seal segments10 Sep 2024US 12,084,984 B2Siemens Energy Global GmbH & Co. KG
- Seal assembly for aircraft engine9 Jan 2024US 11,867,064 B1Pratt & Whitney Canada Corp.
- Aspirating face seal assembly for a rotary machine20 Jun 2023US 11,680,645 B2General Electric Company
- Compressor13 Aug 2026US 2026/0235136 A1Mitsubishi Heavy Industries Compressor Corporation
- Piston Seal Ring Bypass9 Jul 2026US 2026/0194140 A1Rtx Corporation
- Pressure activated non-contact seals and seal assemblies28 May 2026US 2026/0146672 A1
- Tool for alignment of seal segments21 Nov 2024US 2024/0384669 A1Siemens Energy Global GmbH & Co. KG
- Piston Seal Ring Bypass1 Aug 2024US 2024/0255055 A1Rtx Corporation
Most cited
By later US patents
- Sealing system for a turboexpander compressor56US 4,477,223 ATexas Turbine, Inc. · 1984
- Method and apparatus for reducing contamination in an axial compressor48US 6,609,888 B1Watson Cogeneration Company · 2003
- Rotor and stator assembly configured as an aspirating face seal44US 5,975,537 AGeneral Electric Company · 1999
- Shaft seal assembly43US 7,396,017 B2Isotech of Illinois, Inc. · 2008
- Labyrinth seal42US 5,085,443 AAmoco Corporation · 1992