F16J 15/348
Pre-assembled seals
Official title: {Pre-assembled seals, e.g. cartridge seals}
F16J15/348 (Pre-assembled seals) appears on 337 US grants and 312 published applications in this corpus.
Search patents in F16J- Granted patents
- 337
- Published applications
- 312
- Assignees
- 179
- Inventors
- 598
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 17 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 1 |
| 2002 | 7 | 8 |
| 2003 | 7 | 14 |
| 2004 | 13 | 12 |
| 2005 | 5 | 16 |
| 2006 | 11 | 8 |
| 2007 | 6 | 9 |
| 2008 | 3 | 12 |
| 2009 | 0 | 14 |
| 2010 | 8 | 14 |
| 2011 | 10 | 17 |
| 2012 | 13 | 10 |
| 2013 | 5 | 8 |
| 2014 | 12 | 13 |
| 2015 | 8 | 17 |
| 2016 | 8 | 14 |
| 2017 | 19 | 14 |
| 2018 | 6 | 13 |
| 2019 | 14 | 11 |
| 2020 | 7 | 14 |
| 2021 | 11 | 21 |
| 2022 | 14 | 16 |
| 2023 | 22 | 11 |
| 2024 | 16 | 7 |
| 2025 | 10 | 10 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tandem seal pump8 Sep 2026US 12,729,692 B2Ceco Environmental IP Inc.
- Mechanical seal arrangement with sensor arrangement1 Sep 2026US 12,723,657 B2Eagleburgmann Germany GmbH & Co.KG
- Cartridge seal25 Aug 2026US 12,716,499 B2ErgoSeal, Inc.
- High pressure gas sealing23 Jun 2026US 12,663,015 B2Dover Pumps & Process Solutions Segment, Inc.
- Self-priming centrifugal pump assembly with multifunctional sealing system16 Jun 2026US 12,655,846 B2
- Sealing arrangement, pump and method13 Aug 2026US 2026/0235137 A1Aalto University Foundation sr
- Sealing ring assembly for sealing a rotating shaft on extraction equipment16 Jul 2026US 2026/0201954 A1
- Sealing assembly and vertical pump/mixer comprising the sealing assembly18 Jun 2026US 2026/0166503 A1Sulzer Management AG
- Cartridge sealing device with semi-solid mud filler and configured to be mounted to fluid equipment30 Apr 2026US 2026/0117873 A1AIGI Environmental Inc.
- Seal and system with a seal12 Mar 2026US 2026/0071680 A1Stasskol GmbH
Most cited
By later US patents
- Emission seal77US 5,865,441 A1999
- Mechanical seal with flexible metal diaphragm64US 5,947,479 AJohn Crane Inc. · 1999
- Tandem seal arrangement for mechanical face seals62US 5,529,315 AJohn Crane Inc. · 1996
- Gas lubricated slow speed seal57US 6,142,478 AJohn Crane Inc. · 2000
- Seal assembly for an intershaft seal in a gas turbine engine53US 6,196,790 B1United Technologies Corporation · 2001