F16J 15/406
By at least one pump
Official title: {by at least one pump}
F16J15/406 (By at least one pump) appears on 248 US grants and 158 published applications in this corpus.
Search patents in F16J- Granted patents
- 248
- Published applications
- 158
- Assignees
- 186
- Inventors
- 496
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 10 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 5 |
| 2004 | 2 | 4 |
| 2005 | 1 | 4 |
| 2006 | 4 | 4 |
| 2007 | 2 | 10 |
| 2008 | 6 | 9 |
| 2009 | 2 | 9 |
| 2010 | 2 | 16 |
| 2011 | 4 | 4 |
| 2012 | 5 | 4 |
| 2013 | 3 | 8 |
| 2014 | 5 | 10 |
| 2015 | 8 | 7 |
| 2016 | 7 | 6 |
| 2017 | 5 | 9 |
| 2018 | 9 | 6 |
| 2019 | 8 | 7 |
| 2020 | 4 | 4 |
| 2021 | 6 | 5 |
| 2022 | 5 | 7 |
| 2023 | 7 | 3 |
| 2024 | 5 | 7 |
| 2025 | 4 | 5 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sealing gas leakage recovery and sealing gas boosting system and method28 Apr 2026US 12,612,922 B2Nuovo Pignone Tecnologie Srl
- Pump arrangement for pumping barrier liquid and a mechanical shaft seal30 Sep 2025US 12,429,062 B2Sulzer Management AG
- Double-belt press3 Jun 2025US 12,318,972 B2Sgic Inc.
- Intermittent flushing plunger packing assembly14 Jan 2025US 12,196,199 B2SPM Oil & Gas Inc.
- Gland seal assembly14 Jan 2025US 12,196,322 B1Sealing Equipment Products Co.
- Seal gas emissions from dry gas seals10 Sep 2026US 2026/0266371 A1AES Engineering Ltd.
- Pumping ring for rotary shaft equipment seals5 Mar 2026US 2026/0063135 A1John Crane Inc.
- Seal system5 Feb 2026US 2026/0036203 A1John Crane UK Limited
- Pillow block assembly27 Nov 2025US 2025/0361910 A1
- Drive ring for rotary shaft equipment seals10 Jul 2025US 2025/0223972 A1John Crane Inc.
Most cited
By later US patents
- Fluid-sealed shaft seal with bores for supplying and discharging fluid85US 4,523,764 AM. A. N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft · 1985
- Rotary seal and/or bearing57US 6,210,103 B1A. W. Chesterton Company · 2001
- Barrier seal systems52US 5,249,812 AJohn Crane Inc. · 1993
- Linear gas bearing with integral vacuum seal for use in serial process ion implantation equipment50US 4,726,689 AEclipse Ion Technology, Inc. · 1988
- Pressure insensitive lip seal45US 4,344,631 AMechanical Technology Incorporated · 1982