F28F 9/02
Header boxes
Official title: Header boxes; End plates
F28F9/02 (Header boxes) appears on 4,843 US grants and 5,035 published applications in this corpus.
Search patents in F28F- Granted patents
- 4,843
- Published applications
- 5,035
- Assignees
- 1,735
- Inventors
- 9,617
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 26 | 0 |
| 1978 | 32 | 0 |
| 1979 | 38 | 0 |
| 1980 | 44 | 0 |
| 1981 | 47 | 0 |
| 1982 | 39 | 0 |
| 1983 | 39 | 0 |
| 1984 | 51 | 0 |
| 1985 | 59 | 0 |
| 1986 | 59 | 0 |
| 1987 | 59 | 0 |
| 1988 | 55 | 0 |
| 1989 | 59 | 0 |
| 1990 | 50 | 0 |
| 1991 | 51 | 0 |
| 1992 | 62 | 0 |
| 1993 | 84 | 0 |
| 1994 | 79 | 0 |
| 1995 | 56 | 0 |
| 1996 | 64 | 0 |
| 1997 | 61 | 0 |
| 1998 | 77 | 0 |
| 1999 | 103 | 0 |
| 2000 | 80 | 0 |
| 2001 | 107 | 35 |
| 2002 | 66 | 105 |
| 2003 | 69 | 95 |
| 2004 | 79 | 121 |
| 2005 | 85 | 181 |
| 2006 | 112 | 169 |
| 2007 | 83 | 180 |
| 2008 | 65 | 189 |
| 2009 | 66 | 147 |
| 2010 | 79 | 159 |
| 2011 | 85 | 173 |
| 2012 | 78 | 155 |
| 2013 | 80 | 183 |
| 2014 | 100 | 214 |
| 2015 | 113 | 238 |
| 2016 | 121 | 265 |
| 2017 | 218 | 279 |
| 2018 | 214 | 272 |
| 2019 | 270 | 266 |
| 2020 | 233 | 256 |
| 2021 | 200 | 248 |
| 2022 | 214 | 291 |
| 2023 | 198 | 251 |
| 2024 | 201 | 229 |
| 2025 | 200 | 177 |
| 2026 | 100 | 157 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F28F 9/026With static flow control means1,505
- F28F 9/0246Arrangements for connecting header boxes with flow lines937
- F28F 9/04Arrangements for sealing elements into header boxes or end plates933
- F28F 9/0219Arrangements for sealing end plates into casing or header box912
- F28F 9/0202Header boxes having their inner space divided by partitions836
- F28F 2009/0285Other particular headers or end platesIndexing code388
- F28F 9/0243Header boxes having a circular cross-section291
- F28F 9/0229Double end plates187
Recent patents
- Connector, connector assembly, liquid cooled plate, and liquid cooled server6 Oct 2026US 12,753,979 B2Bitmain Technologies Inc.
- Indoor unit of air conditioner29 Sep 2026US 12,747,871 B2Fujitsu General Limited
- Air conditioner having refrigerant distributor29 Sep 2026US 12,747,918 B2Samsung Electronics Co., Ltd.
- Self-aligning connector for liquid cooling of a computing device29 Sep 2026US 12,750,985 B2Quanta Computer Inc.
- Heat exchanger for a motor vehicle22 Sep 2026US 12,741,502 B2Valeo Systemes Thermiques
- Heat exchanger for automobiles8 Oct 2026US 2026/0309427 A1Estra Automotive Systems Co., Ltd.
- Heat exchanger8 Oct 2026US 2026/0309428 A1Hanon Systems
- Mechanism for single hand operation of dual quick disconnects on an external desktop radiator1 Oct 2026US 2026/0298386 A1Lenovo (United States) Inc.
- Heat exchange assembly and heat exchange system1 Oct 2026US 2026/0298547 A1Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd.
- Liquid-cooling heat exchange device1 Oct 2026US 2026/0298556 A1Thermasol Technology Co., Ltd.
Most cited
By later US patents
- Closed loop liquid cooling for semiconductor RF amplifier modules213US 5,901,037 ANorthrop Grumman Corporation · 1999
- Outlet silencer and heat recovery structures for gas turbine177US 6,851,514 B2Air Handling Engineering Ltd. · 2005
- Cooling system for VLSI circuit chips160US 4,561,040 AIBM Corporation · 1985
- Self-centering seal for use in hydraulically expanding tubes152US 4,359,889 AHaskel Engineering & Supply Company · 1982
- Compliant fluidic coolant hat138US 5,388,635 AInternational Business Machines Corporation · 1995