F16L 59/11
Rigid covers for elbows
F16L59/11 (Rigid covers for elbows) appears on 25 US grants and 6 published applications in this corpus.
Search patents in F16L- Granted patents
- 25
- Published applications
- 6
- Assignees
- 11
- Inventors
- 23
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Thermal protection device for a quick coupling connector30 Dec 2025US 12,509,010 B2Akwel
- Insulating cover device of pipe-insulating structure, and manufacturing method therefor15 Oct 2024US 12,117,119 B1Dong In Engineering Co., Ltd.
- Pipe insulation fitting cover9 May 2017US 9,644,772 B2Chilled Water Fittings Inc.
- Pipe insulation apparatus having finishing cover of compression-bonded structure25 Oct 2016US 9,476,538 B2Dong In Engineering Co., Ltd.
- Composite protective element for a thermally insulated pipe31 Mar 2015US 8,991,437 B2Daher Aerospace
- Insulating cover device of pipe-insulating structure, and manufacturing method therefor3 Oct 2024US 2024/0328566 A1Dong In Engineering Co., Ltd.
- Thermal Protection Device for a Quick Coupling Connector18 Apr 2024US 2024/0123927 A1Akwel
- Insulated tubular exhaust apparatus and methods9 Jul 2020US 2020/0217443 A1Nelson Global Products, Inc.
- Pipe insulation apparatus having finishing cover of compression-bonded structure25 Aug 2016US 2016/0245452 A1Dong In Engineering Co., Ltd.
- Composite Protective Element for a Thermally Insulated Pipe26 Sep 2013US 2013/0248039 A1Daher Aerospace
Most cited
By later US patents
- Pipe insulation fitting cover and fastening means and methods of using the same45US 4,669,509 A1987
- Article for covering various pipefittings42US 3,960,181 A1976
- Two piece pipe fitting cover40US 4,840,201 A1989
- Protective system for P-trap39US 5,054,513 A1991
- System for P-trap protection35US 5,259,410 ATruebro, Inc. · 1993