F04B 1/0448
Sealing means
Official title: Sealing means, e.g. for shafts or housings (for pistons F04B1/0408 {; Stoffing boxes F04B53/164})
F04B1/0448 (Sealing means) appears on 109 US grants and 142 published applications in this corpus.
Search patents in F04B- Granted patents
- 109
- Published applications
- 142
- Assignees
- 70
- Inventors
- 326
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 7 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 5 |
| 2007 | 0 | 2 |
| 2008 | 2 | 1 |
| 2009 | 2 | 5 |
| 2010 | 2 | 3 |
| 2011 | 4 | 3 |
| 2012 | 1 | 2 |
| 2013 | 3 | 7 |
| 2014 | 2 | 7 |
| 2015 | 4 | 6 |
| 2016 | 3 | 10 |
| 2017 | 4 | 7 |
| 2018 | 3 | 14 |
| 2019 | 12 | 12 |
| 2020 | 9 | 19 |
| 2021 | 6 | 3 |
| 2022 | 9 | 6 |
| 2023 | 5 | 8 |
| 2024 | 5 | 8 |
| 2025 | 10 | 7 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-part sealing assembly25 Aug 2026US 12,716,403 B2Gd Energy Products, LLC
- Sealing assembly with repositionable seal11 Aug 2026US 12,704,119 B2Gd Energy Products, LLC
- Sealing ring assemblies configured for pressure locking19 May 2026US 12,631,163 B2Mainspring Engergy, Inc.
- Packing seal assembly24 Feb 2026US 12,560,156 B2Kerr Machine Co.
- Brake mechanism for a radial piston unit16 Dec 2025US 12,497,943 B2Danfoss A/S
- Packing seal assembly21 May 2026US 2026/0139663 A1Kerr Machine Co.
- Fluid end plug with bore clearance30 Oct 2025US 2025/0334119 A1Kerr Machine Co.
- Hydraulic fluid pump and stuffing box assembly for same9 Oct 2025US 2025/0314300 A1Gd Energy Products, LLC
- Packing seal assembly21 Aug 2025US 2025/0264095 A1Kerr Machine Co.
- Sealing ring assemblies configured for pressure locking7 Aug 2025US 2025/0250970 A1Mainspring Energy, Inc.
Most cited
By later US patents
- Fluid end assembly57US 10,962,001 B2Kerr Machine Co. · 2021
- Pump system39US 10,247,184 B2Forum US, Inc. · 2019
- Fluid end of a reciprocating pump with reduced stress38US 10,273,954 B2Black Horse, LLC · 2019
- Hydraulic fluid pump and stuffing box assembly for same37US 11,454,321 B2Gd Energy Products, LLC · 2022
- Pump with segmented fluid end housing and in-line valve34US 10,655,623 B22020