F16L 23/00
Flanged joints
Official title: Flanged joints (F16L13/00, F16L17/00, F16L19/00 take precedence; adjustable joints F16L27/00; for hoses F16L33/00; couplings of the quick-acting type F16L37/00; for double-walled or multi-channel pipes, or pipe assemblies F16L39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L47/00; specially adapted for pipes of brittle material F16L49/00)
F16L23/00 (Flanged joints) appears on 2,530 US grants and 2,274 published applications in this corpus.
Search patents in F16L- Granted patents
- 2,530
- Published applications
- 2,274
- Assignees
- 1,428
- Inventors
- 4,615
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 28 | 0 |
| 1977 | 22 | 0 |
| 1978 | 29 | 0 |
| 1979 | 18 | 0 |
| 1980 | 27 | 0 |
| 1981 | 26 | 0 |
| 1982 | 17 | 0 |
| 1983 | 20 | 0 |
| 1984 | 36 | 0 |
| 1985 | 28 | 0 |
| 1986 | 38 | 0 |
| 1987 | 44 | 0 |
| 1988 | 27 | 0 |
| 1989 | 36 | 0 |
| 1990 | 28 | 0 |
| 1991 | 33 | 0 |
| 1992 | 33 | 0 |
| 1993 | 23 | 0 |
| 1994 | 35 | 0 |
| 1995 | 37 | 0 |
| 1996 | 32 | 0 |
| 1997 | 37 | 0 |
| 1998 | 31 | 0 |
| 1999 | 40 | 0 |
| 2000 | 36 | 0 |
| 2001 | 39 | 12 |
| 2002 | 42 | 38 |
| 2003 | 38 | 41 |
| 2004 | 35 | 51 |
| 2005 | 31 | 65 |
| 2006 | 27 | 59 |
| 2007 | 25 | 62 |
| 2008 | 37 | 80 |
| 2009 | 34 | 67 |
| 2010 | 48 | 75 |
| 2011 | 37 | 91 |
| 2012 | 69 | 75 |
| 2013 | 46 | 92 |
| 2014 | 48 | 96 |
| 2015 | 82 | 130 |
| 2016 | 74 | 116 |
| 2017 | 99 | 119 |
| 2018 | 92 | 128 |
| 2019 | 108 | 137 |
| 2020 | 124 | 126 |
| 2021 | 93 | 120 |
| 2022 | 127 | 123 |
| 2023 | 125 | 95 |
| 2024 | 119 | 106 |
| 2025 | 103 | 106 |
| 2026 | 67 | 64 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16L 23/16Flanged joints: characterised by the sealing means907
- F16L 23/02The flanges being connected by members tensioned axially860
- F16L 23/04The flanges being connected by members tensioned in the radial plane754
- F16L 23/003Auxiliary devices304
- F16L 23/12Flanged joints: specially adapted for particular pipes274
- F16L 23/006Attachments111
Recent patents
- Joint structure6 Oct 2026US 12,753,872 B2Fujikin Incorporated
- V-clamp tool apparatus and method of use29 Sep 2026US 12,746,649 B2
- System and method for forming a full engagement male lock in a ductline29 Sep 2026US 12,747,810 B2Mestek Machinery, Inc.
- Actuators22 Sep 2026US 12,742,465 B2Hamilton Sundstrand Corporation
- Retaining device for end rings of pipe coupling22 Sep 2026US 12,742,510 B1Krausz Industries Ltd.
- A hazardous fluid isolation system8 Oct 2026US 2026/0309284 A1Fabrum IP Holdings Limited
- Seal for a tri-clamp connection, and tri-clamp connection having such a seal17 Sep 2026US 2026/0276119 A1U-CONSULTING GmbH
- Sealing Device and Method for the Production Thereof and Pipeline System17 Sep 2026US 2026/0276120 A1Glatt GmbH
- Gasket with electrical isolating coatings3 Sep 2026US 2026/0258867 A1GPT Industries, LLC
- Gas supply system and semiconductor manufacturing apparatus3 Sep 2026US 2026/0258913 A1Tokyo Electron Limited
Most cited
By later US patents
- Source chemical container assembly561US 6,889,864 B2ASM International N.V. · 2005
- Frac manifold missile and fitting148US 10,982,523 B1KHOLLE Magnolia 2015, LLC · 2021
- Hingeable split pipe collar144US 4,408,788 AGrinnell Fire Protection Systems Company, Inc. · 1983
- Flowline junction fittings for frac systems127US 10,662,749 B1KHOLLE Magnolia 2015, LLC · 2020
- Deformable mechanical pipe coupling117US 7,086,131 B2Victaulic Company · 2006