F16J 15/28
With sealing rings made of metal
Official title: with sealing rings made of metal
F16J15/28 (With sealing rings made of metal) appears on 61 US grants and 57 published applications in this corpus.
Search patents in F16J- Granted patents
- 61
- Published applications
- 57
- Assignees
- 55
- Inventors
- 147
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 4 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 1 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 6 |
| 2019 | 3 | 5 |
| 2020 | 4 | 4 |
| 2021 | 7 | 6 |
| 2022 | 3 | 5 |
| 2023 | 4 | 5 |
| 2024 | 6 | 3 |
| 2025 | 4 | 6 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Fluid end assembly18 Aug 2026US 12,710,039 B2Kerr Machine Co.
- Piston for a compressor, compressor, and method and removal tool for disassembling a piston2 Jun 2026US 12,644,447 B2Burckhardt Compression AG
- Fluid end with clamped retention8 Jul 2025US 12,352,356 B2Kerr Machine Co.
- Fluid end assembly1 Jul 2025US 12,345,254 B2Kerr Machine Co.
- Fluid end with clamped retention2 Oct 2025US 2025/0305585 A1Kerr Machine Co.
- Packing case with composite rings25 Sep 2025US 2025/0297679 A1Dover Pumps & Process Solutions Segment, Inc.
- Fluid end assembly11 Sep 2025US 2025/0283465 A1Kerr Machine Co.
- Piston for a compressor, compressor, and method and removal tool for disassembling a piston22 May 2025US 2025/0163901 A1Burckhardt Compression AG
- Valve packing ring set8 May 2025US 2025/0146598 A1EGC Operating Company LLC (dba EGC Enterprises Inc.)
Most cited
By later US patents
- Well sealing system132US 4,288,082 AOtis Engineering Corporation · 1981
- Sealing ring packing36US 6,478,303 B1Hoerbiger Ventilwerke Aktiengesellschaft · 2002
- Seal and seal shield assembly for rotary drill bits31US 4,762,189 A1988
- Sealing assembly for relatively movable members30US 5,009,519 A1991
- Actuating sealing joint26US 4,302,020 AUnited Aircraft Products, Inc. · 1981