F16L 53/38
Using elongate electric heating elements
Official title: using elongate electric heating elements, e.g. wires or ribbons
F16L53/38 (Using elongate electric heating elements) appears on 386 US grants and 469 published applications in this corpus.
Search patents in F16L- Granted patents
- 386
- Published applications
- 469
- Assignees
- 260
- Inventors
- 913
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 3 |
| 2003 | 4 | 4 |
| 2004 | 4 | 2 |
| 2005 | 2 | 8 |
| 2006 | 1 | 10 |
| 2007 | 7 | 10 |
| 2008 | 4 | 14 |
| 2009 | 2 | 14 |
| 2010 | 8 | 14 |
| 2011 | 9 | 12 |
| 2012 | 6 | 22 |
| 2013 | 11 | 28 |
| 2014 | 12 | 22 |
| 2015 | 17 | 28 |
| 2016 | 18 | 23 |
| 2017 | 26 | 36 |
| 2018 | 16 | 39 |
| 2019 | 29 | 31 |
| 2020 | 29 | 27 |
| 2021 | 27 | 21 |
| 2022 | 21 | 21 |
| 2023 | 13 | 19 |
| 2024 | 23 | 30 |
| 2025 | 20 | 22 |
| 2026 | 11 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Integrated heating and insulation system6 Oct 2026US 12,753,873 B2
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- Subsea flowline blockage remediation using external heating device25 Aug 2026US 12,716,539 B2Oceaneering International, Inc.
- Heated whip hose11 Aug 2026US 12,702,991 B2Graco Minnesota Inc.
- Manufacture of pipe-in-pipe assemblies28 Jul 2026US 12,692,969 B2Acergy France SAS
- Underwater vehicle and method for installing retaining devices on an underwater pipeline20 Aug 2026US 2026/0246247 A1
- Heat tracing monitoring system and heat tracing monitoring method30 Jul 2026US 2026/0218832 A1Innocreative System Co.,Ltd
- Thermal insulation structure for pipe, pipe heating system, thermal insulation sheet, and method of installing thermal insulation structure23 Jul 2026US 2026/0210476 A1Nichias Corporation
- Jacket heater, method for manufacturing jacket heater, and heating unit16 Jul 2026US 2026/0206102 A1Nichias Corporation
- Bent tubing with heater2 Jul 2026US 2026/0185636 A1
Most cited
By later US patents
- Arrangement in a pipe bundle581US 5,979,506 AAker Engineering AS · 1999
- Heater jacket for a fluid line502US 9,341,296 B2ASM America, Inc. · 2016
- Electrically heated flexible tube having temperature measuring probe379US 4,038,519 ARhone-Poulenc Inc. · 1977
- Electric heating apparatus for de-icing pipes309US 4,423,311 A1983
- Humidifier conduit295US 5,640,951 AFisher & Paykel Limited · 1997