F16J 15/3496
Use of special materials
Official title: {use of special materials}
F16J15/3496 (Use of special materials) appears on 264 US grants and 205 published applications in this corpus.
Search patents in F16J- Granted patents
- 264
- Published applications
- 205
- Assignees
- 169
- Inventors
- 579
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 7 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 2 |
| 2003 | 6 | 6 |
| 2004 | 4 | 10 |
| 2005 | 5 | 4 |
| 2006 | 3 | 5 |
| 2007 | 5 | 6 |
| 2008 | 1 | 0 |
| 2009 | 2 | 5 |
| 2010 | 2 | 5 |
| 2011 | 1 | 4 |
| 2012 | 2 | 2 |
| 2013 | 2 | 5 |
| 2014 | 2 | 10 |
| 2015 | 8 | 10 |
| 2016 | 7 | 16 |
| 2017 | 6 | 10 |
| 2018 | 5 | 10 |
| 2019 | 8 | 12 |
| 2020 | 9 | 21 |
| 2021 | 11 | 12 |
| 2022 | 21 | 16 |
| 2023 | 10 | 11 |
| 2024 | 8 | 7 |
| 2025 | 14 | 6 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mechanical seal arrangement6 Oct 2026US 12,753,839 B2Eagleburgmann Germany GmbH & Co.KG
- Seal assembly for gas turbine engines26 May 2026US 12,637,954 B2Rtx Corporation
- Sliding components19 May 2026US 12,631,215 B2Eagle Industry Co., Ltd.
- Hard sealing ring having an anti-friction surface, anti-friction sealing device, and production method28 Apr 2026US 12,612,970 B2Procudi GmbH
- Sealing member and method for manufacturing same24 Mar 2026US 12,584,557 B2Flowserve Ksm Co., Ltd.
- Wire retention for carbon seal and method of assembly13 Aug 2026US 2026/0235042 A1Rtx Corporation
- Mechanical seal arrangement30 Jul 2026US 2026/0218793 A1Eagleburgmann Germany GmbH & Co.KG
- Hard sealing ring having an anti-friction surface, anti-friction sealing device, and production method16 Jul 2026US 2026/0201960 A1Procudi GmbH
- Slide ring of a mechanical seal, and method for the production thereof18 Jun 2026US 2026/0168578 A1Eagleburgmann Germany GmbH & Co.KG
- Seal ring11 Jun 2026US 2026/0158545 A1Caterpillar Inc.
Most cited
By later US patents
- Controlled leakage rotating seal ring with elements for receiving and holding a lubricant on a face thereof68US 6,189,896 B1Caterpillar Inc. · 2001
- Rotary bearing seal for drill bits55US 4,176,848 ADresser Industries, Inc. · 1979
- Self-lubricating seal52US 3,973,781 AVEB Gummikombinat Berlin · 1976
- Impeller adjuster for centrifugal pump50US 4,439,096 AA. W. Chesterton Company · 1984
- DLC coating for earth-boring bit seal ring50US 7,234,541 B2Baker Hughes Incorporated · 2007