F16J 15/3232
Having two or more lips
Official title: having two or more lips
F16J15/3232 (Having two or more lips) appears on 1,015 US grants and 1,041 published applications in this corpus.
Search patents in F16J- Granted patents
- 1,015
- Published applications
- 1,041
- Assignees
- 510
- Inventors
- 2,014
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 13 | 0 |
| 1979 | 9 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 19 | 0 |
| 1986 | 14 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 14 | 0 |
| 1993 | 9 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 19 | 0 |
| 2000 | 11 | 0 |
| 2001 | 14 | 6 |
| 2002 | 13 | 18 |
| 2003 | 16 | 19 |
| 2004 | 17 | 24 |
| 2005 | 10 | 17 |
| 2006 | 11 | 22 |
| 2007 | 9 | 34 |
| 2008 | 9 | 26 |
| 2009 | 9 | 34 |
| 2010 | 16 | 38 |
| 2011 | 19 | 32 |
| 2012 | 28 | 30 |
| 2013 | 26 | 33 |
| 2014 | 19 | 40 |
| 2015 | 29 | 39 |
| 2016 | 33 | 59 |
| 2017 | 37 | 63 |
| 2018 | 46 | 63 |
| 2019 | 60 | 68 |
| 2020 | 55 | 79 |
| 2021 | 51 | 77 |
| 2022 | 57 | 60 |
| 2023 | 57 | 50 |
| 2024 | 53 | 45 |
| 2025 | 53 | 35 |
| 2026 | 27 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tiltable floating lip seal6 Oct 2026US 12,753,838 B2Flowserve Pte. Ltd.
- Fluid end with clamped retention25 Aug 2026US 12,716,495 B2Kerr Machine Co.
- Outboard drive axle hub seal with venting25 Aug 2026US 12,716,497 B2Freudenberg-NOK General Partnership
- Assembly having two components and an oil transfer ring25 Aug 2026US 12,716,498 B2ZF Friedrichshafen AG
- Dust seal ring25 Aug 2026US 12,716,501 B2Valqua, Ltd.
- 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
- Hub bearing20 Aug 2026US 2026/0243349 A1MINEBEA MITSUMI Inc.
- Lubricant Pumping Seal13 Aug 2026US 2026/0235207 A1System Seals, Inc.
- Sealing device23 Jul 2026US 2026/0210438 A1Nok Corporation
Most cited
By later US patents
- Bearing with multiple lip seal401US 3,955,859 AThe Torrington Company · 1976
- Seal for relatively rotatable parts286US 4,494,759 A1985
- 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