F04B 53/164
Stoffing boxes
Official title: {Stoffing boxes}
F04B53/164 (Stoffing boxes) appears on 414 US grants and 326 published applications in this corpus.
Search patents in F04B- Granted patents
- 414
- Published applications
- 326
- Assignees
- 209
- Inventors
- 640
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 12 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 10 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 12 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 3 |
| 2002 | 5 | 4 |
| 2003 | 7 | 6 |
| 2004 | 4 | 7 |
| 2005 | 5 | 3 |
| 2006 | 0 | 5 |
| 2007 | 6 | 8 |
| 2008 | 2 | 9 |
| 2009 | 4 | 12 |
| 2010 | 10 | 10 |
| 2011 | 6 | 3 |
| 2012 | 6 | 7 |
| 2013 | 4 | 7 |
| 2014 | 3 | 13 |
| 2015 | 8 | 7 |
| 2016 | 8 | 12 |
| 2017 | 7 | 8 |
| 2018 | 6 | 12 |
| 2019 | 7 | 13 |
| 2020 | 11 | 23 |
| 2021 | 15 | 14 |
| 2022 | 19 | 26 |
| 2023 | 18 | 29 |
| 2024 | 26 | 33 |
| 2025 | 34 | 24 |
| 2026 | 24 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Header ring8 Sep 2026US 12,729,679 B1Utex Industries, Inc.
- Fluid retention apparatus for fluid end of positive displacement pump and related method25 Aug 2026US 12,716,412 B2
- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Fluid end assembly18 Aug 2026US 12,710,039 B2Kerr Machine Co.
- Sealing assembly with repositionable seal11 Aug 2026US 12,704,119 B2Gd Energy Products, LLC
- Adjustable seal system for a reciprocating pump1 Oct 2026US 2026/0298225 A1Gd Energy Products, LLC
- Packing seal locking assembly for pumps and associated methods17 Sep 2026US 2026/0275983 A1Vulcan Industrial Holdings, LLC
- Seal Stack Assembly for Reciprocating Pump17 Sep 2026US 2026/0276085 A1Saint-Gobain Performance Plastics Corporation
- Header Ring10 Sep 2026US 2026/0266283 A1Utex Industries, Inc.
- Piston pump of the type having at least three pumping chambers23 Jul 2026US 2026/0210343 A1Mixtron S.R.L.
Most cited
By later US patents
- Disposable ambulatory microprocessor controlled volumetric pump249US 5,807,075 ASarcos Corp. · 1998
- High pressure reciprocating pump apparatus214US 4,878,815 A1989
- Intravenous liquid pumping system and method191US 4,468,222 AValleylab, Inc. · 1984
- High pressure plunger pump housing and packing160US 6,382,940 B12002
- Valve guide and spring retainer assemblies160US 6,910,871 B12005