F04D 13/083
And protected by a gas-bell
Official title: {and protected by a gas-bell}
F04D13/083 (And protected by a gas-bell) appears on 36 US grants and 24 published applications in this corpus.
Search patents in F04D- Granted patents
- 36
- Published applications
- 24
- Assignees
- 28
- Inventors
- 60
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 3 |
| 2017 | 0 | 0 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 3 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 3 | 3 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas seal column apparatus with sensor column28 Oct 2025US 12,454,956 B2Gscd Corp.
- Gas seal column apparatus with sensor column14 Jan 2025US 12,196,212 B2Gscd Corp.
- Gas seal column apparatus15 Oct 2024US 12,117,010 B2Gscd Corp.
- Submersible electric machine3 Sep 2024US 12,078,177 B2Xylem Europe GmbH
- Portable pump28 May 2024US 11,994,131 B2Reed Manufacturing Company
- Shaft sealing device13 Aug 2026US 2026/0235208 A1Eagle Industry Co., Ltd.
- Gas seal column apparatus with sensor column31 Jul 2025US 2025/0243866 A1Gscd Corp.
- Shaft sealing device30 Jan 2025US 2025/0035213 A1Eagle Industry Co., Ltd.
- Gas seal column apparatus with sensor column19 Dec 2024US 2024/0418173 A1Gscd Corp.
- Gas seal column apparatus26 Sep 2024US 2024/0318657 A1Gscd Corp.
Most cited
By later US patents
- Enclosed sump pump65US 4,087,204 A1978
- Submersible motor with shaft seals49US 6,379,127 B1Lawrence Pumps, Inc. · 2002
- Protection device and sump pump44US 4,309,157 A1982
- Pressurized seal for submersible pumps28US 6,422,822 B1Shell Oil Company · 2002
- All dry submersible motor pump with a concordant seal system26US 4,966,532 A1990