F16J 15/3444
By magnetic attraction
Official title: {by magnetic attraction}
F16J15/3444 (By magnetic attraction) appears on 42 US grants and 38 published applications in this corpus.
Search patents in F16J- Granted patents
- 42
- Published applications
- 38
- Assignees
- 28
- Inventors
- 72
- Latest grant
- 14 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 3 |
| 2015 | 1 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 5 |
| 2018 | 6 | 6 |
| 2019 | 4 | 4 |
| 2020 | 3 | 4 |
| 2021 | 2 | 1 |
| 2022 | 5 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Mechanical seal with sensor14 Nov 2023US 11,815,491 B2John Crane UK Limited
- Electromagnetic carbon seal system18 Oct 2022US 11,473,506 B2Rolls-Royce North American Technologies Inc.
- Rotary face seal with magnetic puller loading13 Sep 2022US 11,441,685 B2Magnetic Seal Corp.
- Magnetic seal assembly17 May 2022US 11,333,253 B2Pratt & Whitney Canada Corp.
- Mechanical seal with sensor22 Mar 2022US 11,280,761 B2John Crane UK Limited
- Electromagnetic carbon seal system19 May 2022US 2022/0154649 A1Rolls-Royce North American Technologies Inc.
- Mechanical seal with sensor21 Oct 2021US 2021/0325347 A1John Crane UK Limited
- Dry gas seal with electronically controlled carrier load13 Aug 2020US 2020/0256468 A1John Crane UK Limited
- Magnetic seal assembly25 Jun 2020US 2020/0200277 A1Pratt & Whitney Canada Corp.
- Mechanical seal with sensor9 Apr 2020US 2020/0109784 A1John Crane UK Limited
Most cited
By later US patents
- Emission seal77US 5,865,441 A1999
- Shaft seal with positively magnetically controlled sealing gap45US 4,447,063 AM. A. N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft · 1984
- Magnetic seal30US 5,161,804 AInpro Companies, Inc. · 1992
- Self-aligning magnetic rotary seal22US 5,730,447 A1998
- Active magnetic seal20US 5,064,205 AGeneral Electric Company · 1991