F16L 57/005
Protection of pipes or objects of similar shape against external or internal
Official title: {specially adapted for the ends of pipes}
F16L57/005 (Protection of pipes or objects of similar shape against external or internal) appears on 283 US grants and 259 published applications in this corpus.
Search patents in F16L- Granted patents
- 283
- Published applications
- 259
- Assignees
- 194
- Inventors
- 595
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 0 |
| 2003 | 5 | 0 |
| 2004 | 2 | 2 |
| 2005 | 0 | 6 |
| 2006 | 1 | 5 |
| 2007 | 3 | 4 |
| 2008 | 5 | 7 |
| 2009 | 1 | 7 |
| 2010 | 7 | 8 |
| 2011 | 4 | 7 |
| 2012 | 3 | 7 |
| 2013 | 4 | 5 |
| 2014 | 9 | 9 |
| 2015 | 8 | 15 |
| 2016 | 7 | 17 |
| 2017 | 11 | 17 |
| 2018 | 17 | 18 |
| 2019 | 15 | 19 |
| 2020 | 15 | 10 |
| 2021 | 12 | 16 |
| 2022 | 12 | 25 |
| 2023 | 13 | 14 |
| 2024 | 17 | 14 |
| 2025 | 11 | 15 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems for earth drilling6 Oct 2026US 12,753,664 B2Mhwirth AS
- Protective device for concrete pumping hose couplers9 Jun 2026US 12,650,190 B1
- Tubular end protector7 Apr 2026US 12,595,872 B2Bewi Energy AS
- Hose with metal fitting10 Feb 2026US 12,546,421 B2Nichirin Co., Ltd.
- Thread connector lock6 Jan 2026US 12,516,757 B2Frank's International, LLC
- Apparatus for removing pipe thread protectors1 Oct 2026US 2026/0298392 A1
- Complementary hose bib protector for outdoor hose bib1 Oct 2026US 2026/0298393 A1D5Wilson Partners LLC
- Protective cap for small-diameter thick-walled pipe17 Sep 2026US 2026/0276129 A1Usui Co., Ltd.
- Dissolvable bellows restraint for flexible pipe joint23 Jul 2026US 2026/0210465 A1Oil States Industries, Inc.
- Oil-well metal pipe23 Jul 2026US 2026/0210478 A1
Most cited
By later US patents
- Device for protecting threadings and butt-type joint bearing surfaces of metallic tubes128US 4,796,668 AVallourec · 1989
- Thread protector apparatus115US 4,379,471 A1983
- Protective flange cover and method of use103US 4,233,697 A1980
- Protective device for threaded portion of tubular member100US 6,564,875 B1Shell Oil Company · 2003
- Protector for threaded connections54US 4,733,888 A1988