F16L 55/1283
Plugging pig
Official title: {Plugging pig}
F16L55/1283 (Plugging pig) appears on 115 US grants and 107 published applications in this corpus.
Search patents in F16L- Granted patents
- 115
- Published applications
- 107
- Assignees
- 62
- Inventors
- 232
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 4 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 3 |
| 2009 | 0 | 2 |
| 2010 | 2 | 5 |
| 2011 | 2 | 6 |
| 2012 | 3 | 2 |
| 2013 | 1 | 2 |
| 2014 | 1 | 6 |
| 2015 | 5 | 13 |
| 2016 | 5 | 1 |
| 2017 | 5 | 6 |
| 2018 | 4 | 2 |
| 2019 | 3 | 8 |
| 2020 | 5 | 4 |
| 2021 | 2 | 5 |
| 2022 | 9 | 17 |
| 2023 | 8 | 5 |
| 2024 | 8 | 4 |
| 2025 | 4 | 3 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Additive inflatable leak check bladder23 Jun 2026US 12,663,330 B2Rtx Corporation
- Method for remote placement of underwater isolation barriers2 Jun 2026US 12,644,553 B2
- Activation system for pipeline plug24 Jun 2025US 12,338,934 B2TDW Delaware, Inc.
- Gripper assembly for pipeline isolation tool and methods of use6 May 2025US 12,292,151 B2TDW Delaware, Inc.
- Tool for intervention on the wall of a fluid pipe, with motorized rollers4 Mar 2025US 12,241,580 B2Grtgaz
- Tool Module for Carrier Robot and Machining Method Implemented by the Tool Module16 Jul 2026US 2026/0202000 A1
- Mechanical plug25 Jun 2026US 2026/0177183 A1Petersen Resources, LLC
- Pipeline Plug Module with Protection Bars forming a Strong Beam11 Jun 2026US 2026/0160376 A1TDW Offshore Services AS
- Devices and methods for repairing pipes23 Apr 2026US 2026/0110386 A1Mueller International, LLC
- Method for remote placement of underwater isolation barriers9 Oct 2025US 2025/0314342 A1
Most cited
By later US patents
- Pipeline vehicle141US 4,852,391 ADen Norske Stats Oljeselskap A.S. · 1989
- Inflation anchor61US 4,413,653 AHalliburton Company · 1983
- Pipe testing tool with magnetic clamps39US 7,669,899 B2CAR-BER Investments Inc. · 2010
- Pressure energized pipeline plug37US 4,465,104 AHughes Tool Company · 1984
- Pipeline pigging plug35US 4,332,277 AHughes Undersea Coupling, Inc. · 1982