F16J 15/3408
At least one ring having an uneven slipping surface
Official title: {at least one ring having an uneven slipping surface}
F16J15/3408 (At least one ring having an uneven slipping surface) appears on 525 US grants and 412 published applications in this corpus.
Search patents in F16J- Granted patents
- 525
- Published applications
- 412
- Assignees
- 175
- Inventors
- 710
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 12 | 0 |
| 1984 | 11 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 10 | 0 |
| 1996 | 14 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 1 |
| 2002 | 10 | 8 |
| 2003 | 5 | 3 |
| 2004 | 2 | 7 |
| 2005 | 2 | 4 |
| 2006 | 4 | 2 |
| 2007 | 6 | 5 |
| 2008 | 2 | 5 |
| 2009 | 1 | 5 |
| 2010 | 5 | 7 |
| 2011 | 3 | 10 |
| 2012 | 9 | 9 |
| 2013 | 5 | 5 |
| 2014 | 12 | 17 |
| 2015 | 9 | 21 |
| 2016 | 19 | 22 |
| 2017 | 25 | 30 |
| 2018 | 21 | 40 |
| 2019 | 28 | 27 |
| 2020 | 30 | 36 |
| 2021 | 31 | 31 |
| 2022 | 26 | 34 |
| 2023 | 29 | 30 |
| 2024 | 33 | 19 |
| 2025 | 24 | 15 |
| 2026 | 14 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sliding component15 Sep 2026US 12,736,138 B2Eagle Industry Co., Ltd.
- Sliding component1 Sep 2026US 12,723,656 B2Eagle Industry Co., Ltd.
- Sliding component25 Aug 2026US 12,716,502 B2Eagle Industry Co., Ltd.
- Sliding components11 Aug 2026US 12,704,151 B2Eagle Industry Co., Ltd.
- Pair of sliding components21 Jul 2026US 12,687,229 B2Eagle Industry Co., Ltd.
- Pair of sliding components24 Sep 2026US 2026/0287061 A1Eagle Industry Co., Ltd.
- Sliding component27 Aug 2026US 2026/0251178 A1Eagle Industry Co., Ltd.
- Rotary machine seal having a wear protection assembly with an abradable covering13 Aug 2026US 2026/0235041 A1General Electric Company
- Sealing arrangement, pump and method13 Aug 2026US 2026/0235137 A1Aalto University Foundation sr
- Shaft sealing device13 Aug 2026US 2026/0235208 A1Eagle Industry Co., Ltd.
Most cited
By later US patents
- Fluid bearing face seal for gas turbine engines137US 5,174,584 AGeneral Electric Company · 1992
- Method and apparatus for sterilization of a centrifugal pump126US 4,643,641 AMICI Limited Partnership IV · 1987
- Face seal assembly118US 6,325,380 B1Feodor Burgmann Dichtungswerke GmbH & Co. · 2001
- Bearing design analysis apparatus and method108US 5,455,778 A1995
- Self aligning spiral groove face seal107US 4,212,475 ACrane Packing Limited · 1980