F28F 13/04
Arrangements for modifying heat-transfer: by preventing the formation of continuous films of
Official title: by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation {(F28F13/18 takes precedence)}
F28F13/04 (Arrangements for modifying heat-transfer: by preventing the formation of continuous films of) appears on 70 US grants and 74 published applications in this corpus.
Search patents in F28F- Granted patents
- 70
- Published applications
- 74
- Assignees
- 61
- Inventors
- 228
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 3 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 3 |
| 2008 | 0 | 4 |
| 2009 | 1 | 1 |
| 2010 | 2 | 3 |
| 2011 | 4 | 5 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 6 |
| 2015 | 1 | 4 |
| 2016 | 1 | 6 |
| 2017 | 4 | 8 |
| 2018 | 1 | 0 |
| 2019 | 4 | 3 |
| 2020 | 2 | 6 |
| 2021 | 4 | 2 |
| 2022 | 5 | 3 |
| 2023 | 0 | 1 |
| 2024 | 3 | 4 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Temperature and relative humidity controller9 Dec 2025US 12,492,839 B2Nelumbo Inc.
- Heat exchanging plate and heat exchanger23 Jul 2024US 12,044,486 B2Alfa Laval Corporate AB
- Liquid-repellent coatings27 Feb 2024US 11,912,890 B2The Regents of the University of California
- Temperature and relative humidity controller23 Jan 2024US 11,879,657 B2Nelumbo Inc.
- Heat and mass transfer component comprising a lubricant-impregnated surface13 Dec 2022US 11,525,641 B2The Board of Trustees of the University of Illinois
- Economizer and boiler8 Oct 2026US 2026/0309323 A1Kurita Water Industries Ltd.
- Gas cooler design method7 May 2026US 2026/0126251 A1Mitsubishi Heavy Industries Compressor Corporation
- Heat Exchangers and Systems Thereof3 Jul 2025US 2025/0216162 A1Nelumbo Inc.
- Heat exchanging plate and heat exchanger10 Oct 2024US 2024/0337451 A1Alfa Laval Corporate AB
- Phase Change Barriers and Methods of Use Thereof29 Aug 2024US 2024/0288215 A1Nelumbo Inc.
Most cited
By later US patents
- Evaporator47US 4,731,159 AImperial Chemical Industries PLC · 1988
- Wetting resistant materials and articles made therewith34US 7,887,934 B2General Electric Company · 2011
- Wetting resistant materials and articles made therewith33US 7,897,271 B2General Electric Company · 2011
- Heat transfer pipe30US 4,549,606 AKabushiki Kaisha Kobe Seiko Sho · 1985
- Plate type condenser28US 4,182,411 AHisaka Works, Ltd. · 1980