F28F 1/40
The means being only inside the tubular element
Official title: the means being only inside the tubular element
F28F1/40 (The means being only inside the tubular element) appears on 607 US grants and 797 published applications in this corpus.
Search patents in F28F- Granted patents
- 607
- Published applications
- 797
- Assignees
- 461
- Inventors
- 1,832
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 12 | 0 |
| 2000 | 11 | 0 |
| 2001 | 10 | 2 |
| 2002 | 8 | 15 |
| 2003 | 9 | 14 |
| 2004 | 9 | 18 |
| 2005 | 8 | 19 |
| 2006 | 14 | 15 |
| 2007 | 9 | 31 |
| 2008 | 2 | 16 |
| 2009 | 6 | 35 |
| 2010 | 10 | 31 |
| 2011 | 11 | 28 |
| 2012 | 12 | 23 |
| 2013 | 12 | 31 |
| 2014 | 8 | 34 |
| 2015 | 15 | 49 |
| 2016 | 16 | 39 |
| 2017 | 33 | 45 |
| 2018 | 32 | 51 |
| 2019 | 54 | 51 |
| 2020 | 35 | 55 |
| 2021 | 43 | 48 |
| 2022 | 42 | 50 |
| 2023 | 27 | 28 |
| 2024 | 31 | 31 |
| 2025 | 26 | 21 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing heat conductive member and heat exchanger8 Sep 2026US 12,728,455 B2NGK Insulators, Ltd.
- Heat exchanger for air cooling1 Sep 2026US 12,723,819 B2Valeo Autosystemy Sp. z o.o.
- Evaporator with orifice insert25 Aug 2026US 12,716,660 B2Hamilton Sundstrand Corporation
- Internally profiled tubes18 Aug 2026US 12,710,236 B2Paralloy Limited
- Heat transfer enhancement pipe as well as cracking furnace and atmospheric and vacuum heating furnace including the same23 Jun 2026US 12,663,224 B2Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
- Highly efficient and economical fluid flat tube structure24 Sep 2026US 2026/0287092 A1
- Pipes having topographic inner structures17 Sep 2026US 2026/0276322 A1Karlsruher Institut Fuer Technologie
- Cleaning appliance27 Aug 2026US 2026/0249328 A1Alfred Kärcher GmbH & Co. KG
- Wire mesh laminated porous material and pipes containing porous material27 Aug 2026US 2026/0249584 A1Mitsubishi Materials Corporation
- Radiator and hydrogen generator with heat dissipation function13 Aug 2026US 2026/0235369 A1Shanghai Asclepius Meditec Co., Ltd.
Most cited
By later US patents
- Compact vacuum insulation176US 5,157,893 AMidwest Research Institute · 1992
- Compact vacuum insulation174US 5,175,975 AMidwest Research Institute · 1993
- Load bearing element and a method for manufacturing a load bearing element119US 10,081,431 B2Airbus Operations GmbH · 2018
- Internally enhanced heat transfer tube66US 5,070,937 AAmerican Standard Inc. · 1991
- Heat transfer tubes and method for manufacturing61US 5,052,476 A501 Mitsubishi Shindoh Co., Ltd. · 1991