F28F 9/013
For tubes or tube-assemblies
Official title: for tubes or tube-assemblies
F28F9/013 (For tubes or tube-assemblies) appears on 803 US grants and 636 published applications in this corpus.
Search patents in F28F- Granted patents
- 803
- Published applications
- 636
- Assignees
- 477
- Inventors
- 1,865
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 18 | 0 |
| 1978 | 14 | 0 |
| 1979 | 12 | 0 |
| 1980 | 20 | 0 |
| 1981 | 18 | 0 |
| 1982 | 19 | 0 |
| 1983 | 16 | 0 |
| 1984 | 14 | 0 |
| 1985 | 18 | 0 |
| 1986 | 24 | 0 |
| 1987 | 30 | 0 |
| 1988 | 20 | 0 |
| 1989 | 13 | 0 |
| 1990 | 8 | 0 |
| 1991 | 15 | 0 |
| 1992 | 11 | 0 |
| 1993 | 11 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 14 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 14 | 0 |
| 2001 | 7 | 1 |
| 2002 | 13 | 4 |
| 2003 | 1 | 14 |
| 2004 | 8 | 15 |
| 2005 | 5 | 13 |
| 2006 | 15 | 18 |
| 2007 | 8 | 11 |
| 2008 | 6 | 13 |
| 2009 | 5 | 18 |
| 2010 | 6 | 21 |
| 2011 | 8 | 19 |
| 2012 | 9 | 22 |
| 2013 | 9 | 36 |
| 2014 | 12 | 29 |
| 2015 | 12 | 35 |
| 2016 | 21 | 40 |
| 2017 | 29 | 39 |
| 2018 | 31 | 45 |
| 2019 | 36 | 38 |
| 2020 | 38 | 33 |
| 2021 | 43 | 38 |
| 2022 | 30 | 39 |
| 2023 | 27 | 31 |
| 2024 | 33 | 20 |
| 2025 | 22 | 20 |
| 2026 | 7 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Heat exchanger sealing plate for air conditioner, indoor unit and air conditioner25 Aug 2026US 12,716,595 B2Gd Midea Heating & Ventilating Equipment Co., Ltd.
- Heat exchanger with a vertical rod baffle structure and at least one notched longitudinal partition plate2 Jun 2026US 12,644,650 B2Lummus Novolen Technology GmbH
- Tubular membrane heat exchanger12 May 2026US 12,624,897 B2Baltimore Aircoil Company, Inc.
- Thermal battery heat transfer coil14 Apr 2026US 12,601,507 B2Intellihot, Inc.
- Baffles for heat exchangers7 Apr 2026US 12,595,977 B2Yara International Asa
- Heat exchanger for an hvac&r system1 Oct 2026US 2026/0298557 A1Tyco Fire & Security GmbH
- Multi-gusset mount for heat exchanger1 Oct 2026US 2026/0298558 A1Hamilton Sundstrand Corporation
- Outdoor unit and air conditioner comprising said outdoor unit24 Sep 2026US 2026/0287184 A1Fujitsu General Limited
- Economizers for waste heat recovery systems27 Aug 2026US 2026/0251406 A1Scope Technology and Manufacturing, LLC
- Wastewater heat exchanger27 Aug 2026US 2026/0251411 A1
Most cited
By later US patents
- Heat exchanger with oblong grommetted tubes and locating plates91US 5,538,079 A1996
- Surgical cutting instrument80US 6,152,894 A2000
- Tube nest for heat exchangers, and modular elements for said nest consisting of thermoplastic tubes, and process for manufacturing the modular elements and the tube nests73US 4,030,540 ABelleli Industrie Meccaniche S.p.A · 1977
- Apparatus for cooling EGR gas62US 5,915,472 AUsui Kokusai Sangyo Kaisha Limited · 1999
- Heat exchanger52US 6,840,309 B2innogy SE · 2005