F16J 15/3236
With at least one lip for each surface
Official title: with at least one lip for each surface, e.g. U-cup packings
F16J15/3236 (With at least one lip for each surface) appears on 511 US grants and 521 published applications in this corpus.
Search patents in F16J- Granted patents
- 511
- Published applications
- 521
- Assignees
- 309
- Inventors
- 1,075
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 17 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 5 |
| 2002 | 7 | 12 |
| 2003 | 9 | 9 |
| 2004 | 12 | 16 |
| 2005 | 2 | 10 |
| 2006 | 11 | 16 |
| 2007 | 6 | 20 |
| 2008 | 6 | 16 |
| 2009 | 8 | 20 |
| 2010 | 7 | 23 |
| 2011 | 16 | 19 |
| 2012 | 14 | 18 |
| 2013 | 18 | 19 |
| 2014 | 12 | 23 |
| 2015 | 18 | 19 |
| 2016 | 19 | 28 |
| 2017 | 18 | 41 |
| 2018 | 22 | 22 |
| 2019 | 27 | 26 |
| 2020 | 23 | 29 |
| 2021 | 22 | 33 |
| 2022 | 19 | 18 |
| 2023 | 26 | 28 |
| 2024 | 22 | 22 |
| 2025 | 27 | 14 |
| 2026 | 11 | 15 |
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.
- Assembly having two components and an oil transfer ring25 Aug 2026US 12,716,498 B2ZF Friedrichshafen AG
- Sealing device, apparatus and robot having the same23 Jun 2026US 12,663,082 B2Flexiv Ltd.
- Laterally moveable compressor piston rod lip seal assembly9 Jun 2026US 12,650,172 B2Ariel Corporation
- Sealing device and manufacturing method therefor26 May 2026US 12,638,081 B2Schaeffler Technologies AG & Co. KG
- Chain pin seal for a chain to be used in conveyor and/or drive technology24 Sep 2026US 2026/0287059 A1Carl Freudenberg KG
- Seal Stack Assembly for Reciprocating Pump17 Sep 2026US 2026/0276085 A1Saint-Gobain Performance Plastics Corporation
- Lip seals and related methods16 Jul 2026US 2026/0201953 A1Bal Seal Engineering, Inc.
- Seal cartridge with bearing assembly and related methods2 Jul 2026US 2026/0185564 A1Bal Seal Engineering, Inc.
- Sealing device for a rolling bearing and associated rolling bearing4 Jun 2026US 2026/0153126 A1Aktiebolaget Skf
Most cited
By later US patents
- Centrifugal blood pump and magnetic coupling141US 5,017,103 ASt. Jude Medical, Inc. · 1991
- Well tool having a metal seal and bi-directional lock123US 4,588,030 ACamco, Incorporated · 1986
- Seal with spring energizer111US 5,265,890 A1993
- Capped spring-energized seal107US 5,799,953 AAmerican Variseal · 1998
- Cartridge seal stack104US 6,161,838 ABal Seal Engineering, Inc. · 2000