F16L 39/005
Joints or fittings for double-walled or multi-channel pipes or pipe assemblies: for
Official title: {for concentric pipes}
F16L39/005 (Joints or fittings for double-walled or multi-channel pipes or pipe assemblies: for) appears on 350 US grants and 313 published applications in this corpus.
Search patents in F16L- Granted patents
- 350
- Published applications
- 313
- Assignees
- 225
- Inventors
- 630
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 9 | 0 |
| 1997 | 5 | 0 |
| 1998 | 11 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 6 |
| 2002 | 3 | 3 |
| 2003 | 10 | 5 |
| 2004 | 4 | 13 |
| 2005 | 7 | 8 |
| 2006 | 7 | 4 |
| 2007 | 2 | 5 |
| 2008 | 2 | 3 |
| 2009 | 4 | 14 |
| 2010 | 3 | 9 |
| 2011 | 5 | 9 |
| 2012 | 4 | 6 |
| 2013 | 9 | 14 |
| 2014 | 8 | 10 |
| 2015 | 10 | 18 |
| 2016 | 7 | 8 |
| 2017 | 15 | 19 |
| 2018 | 12 | 16 |
| 2019 | 18 | 18 |
| 2020 | 13 | 15 |
| 2021 | 18 | 22 |
| 2022 | 12 | 13 |
| 2023 | 13 | 19 |
| 2024 | 18 | 23 |
| 2025 | 23 | 20 |
| 2026 | 16 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coupling for double-walled tubes8 Sep 2026US 12,729,792 B2Airbus Operations GmbH
- Double containment fittings with fusion coils1 Sep 2026US 12,723,693 B1K.D.W. Company Limited
- Malleable press fittings25 Aug 2026US 12,716,538 B2ASC Engineered Solutions, LLC
- Testable termination fitting4 Aug 2026US 12,698,860 B2Franklin Fueling Systems, Inc.
- Aircraft assembly2 Jun 2026US 12,643,672 B2Airbus Operations GmbH
- Coupling for cryogenic conduits20 Aug 2026US 2026/0243384 A1Witzenmann GmbH
- Insulated coupling6 Aug 2026US 2026/0227022 A1Manin Teknik AB
- Device and method for improving a vacuum insulated coupling6 Aug 2026US 2026/0227023 A1Mann Teknik AB
- Aircraft refuelling/defuelling system6 Aug 2026US 2026/0227031 A1Airbus Operations GmbH
- Double pipe fitting23 Jul 2026US 2026/0210469 A1Georg Ficher Rohrleitungssysteme AG
Most cited
By later US patents
- Double shield fitting130US 4,871,196 AMace Corporation · 1989
- Quick-connect fluid coupling107US 4,900,065 ADLH Industries, Inc. · 1990
- Laminated fuel line and connector105US 5,611,373 AHandy & Harman Automotive Group, Inc. · 1997
- Pipe coupling88US 6,464,261 B1Reslink AS · 2002
- Secondary containment system and method82US 5,022,685 A1991