F28F 11/04
Arrangements for sealing leaky tubes and conduits: using pairs of obturating elements
Official title: using pairs of obturating elements, e.g. washers, mounted upon central operating rods (F28F11/06 takes precedence)
F28F11/04 (Arrangements for sealing leaky tubes and conduits: using pairs of obturating elements) appears on 5 US grants and 8 published applications in this corpus.
Search patents in F28F- Granted patents
- 5
- Published applications
- 8
- Assignees
- 4
- Inventors
- 22
- Latest grant
- 28 Jul 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Plugging a heat exchanger tube28 Jul 2020US 10,724,808 B2Saudi Arabian Oil Company
- Reduction of scale build-up in an evaporative cooling apparatus16 Jul 2019US 10,352,622 B2FF Seeley Nominees Pty. Ltd.
- Reduction of scale build-up in an evaporative cooling apparatus26 Dec 2017US 9,851,155 B2FF Seeley Nominees Pty. Ltd.
- Plug kit for pressured components1 Nov 2016US 9,482,476 B2Saudi Arabian Oil Company
- Rod plug caps21 May 1991US 5,016,674 A
- Ceramic tube plug30 May 2024US 2024/0175647 A1Saudi Arabian Oil Company
- Plugging a heat exchanger tube13 Feb 2020US 2020/0049431 A1Saudi Arabian Oil Company
- Reduction of scale build-up in an evaporative cooling apparatus12 Apr 2018US 2018/0100707 A1FF Seeley Nominees Pty. Ltd.
- Reduction of scale build-up in an evaporative cooling apparatus25 Dec 2014US 2014/0374067 A1Coolerado Corporation
- Heat transfer tube repairing apparatus and method and steam generator27 Feb 2014US 2014/0053555 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Rod plug caps8US 5,016,674 A1991
- Plugging a heat exchanger tube2US 10,724,808 B2Saudi Arabian Oil Company · 2020
- Plug kit for pressured components1US 9,482,476 B2Saudi Arabian Oil Company · 2016
- Reduction of scale build-up in an evaporative cooling apparatus1US 9,851,155 B2FF Seeley Nominees Pty. Ltd. · 2017