F16J 15/4478
Pre-assembled packings
Official title: {Pre-assembled packings}
F16J15/4478 (Pre-assembled packings) appears on 86 US grants and 77 published applications in this corpus.
Search patents in F16J- Granted patents
- 86
- Published applications
- 77
- Assignees
- 47
- Inventors
- 120
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 1 |
| 2002 | 6 | 3 |
| 2003 | 2 | 3 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 2 | 3 |
| 2007 | 1 | 6 |
| 2008 | 2 | 2 |
| 2009 | 3 | 1 |
| 2010 | 2 | 5 |
| 2011 | 3 | 3 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 3 | 3 |
| 2015 | 3 | 8 |
| 2016 | 5 | 9 |
| 2017 | 2 | 5 |
| 2018 | 4 | 9 |
| 2019 | 8 | 2 |
| 2020 | 4 | 3 |
| 2021 | 4 | 3 |
| 2022 | 3 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 3 |
| 2025 | 5 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Sealing device2 Sep 2025US 12,404,933 B2Uchiyama Manufacturing Corp.
- Labyrinth seal comprising an abradable element with variable cell density15 Jul 2025US 12,359,582 B2Safran Aircraft Engines
- Shaft seal assembly13 May 2025US 12,297,909 B2Inpro/Seal LLC
- Non-contact seal with seal device axial locator(s)1 Apr 2025US 12,264,742 B2Rtx Corporation
- Sealing device14 Jan 2025US 12,196,317 B2Uchiyama Manufacturing Corp.
- Non-contact seal with seal device axial locator(s)3 Oct 2024US 2024/0328515 A1Raytheon Technologies Corporation
- Sealing device12 Sep 2024US 2024/0301917 A1Uchiyama Manufacturing Corp.
- Sealing Device18 Jan 2024US 2024/0019029 A1Uchiyama Manufacturing Corp.
- Sealing device12 Jan 2023US 2023/0009708 A1Uchiyama Manufacturing Corp.
- Labyrinth seal comprising an abradable element with variable cell density16 Jun 2022US 2022/0186627 A1Safran Aircraft Engines
Most cited
By later US patents
- Sealing rings with complimentary ring members56US 4,706,968 A1987
- Bearing protector with slinger ring48US 4,890,941 ADurametallic Corporation · 1990
- Film riding seal assembly for turbomachinery48US 9,359,908 B2General Electric Company · 2016
- Shaft seal assembly44US 5,378,000 AInpro Companies, Inc. · 1995
- Static and dynamic shaft seal assembly42US 5,069,461 AInpro Companies, Inc. · 1991