F28F 5/02
Rotary drums or rollers
F28F5/02 (Rotary drums or rollers) appears on 153 US grants and 83 published applications in this corpus.
Search patents in F28F- Granted patents
- 153
- Published applications
- 83
- Assignees
- 129
- Inventors
- 371
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 3 |
| 2003 | 2 | 6 |
| 2004 | 5 | 4 |
| 2005 | 3 | 2 |
| 2006 | 6 | 4 |
| 2007 | 1 | 6 |
| 2008 | 4 | 2 |
| 2009 | 2 | 2 |
| 2010 | 1 | 3 |
| 2011 | 1 | 4 |
| 2012 | 2 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 4 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 2 | 5 |
| 2018 | 6 | 4 |
| 2019 | 2 | 3 |
| 2020 | 3 | 6 |
| 2021 | 3 | 4 |
| 2022 | 4 | 4 |
| 2023 | 1 | 2 |
| 2024 | 1 | 4 |
| 2025 | 1 | 6 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metal rotary heat transfer assembly for a rotary air heat exchanger2 Jun 2026US 12,644,658 B2LOSCAR Spółka z ograniczon odpowiedzialności
- Counterflow rotary cooler31 Mar 2026US 12,590,767 B2Industrial Process Systems, Inc.
- Heat exchanger for friction stir welding apparatus and associated system and method5 Aug 2025US 12,377,490 B2The Boeing Company
- Rotary batch and cullet preheater system and method10 Sep 2024US 12,084,375 B2
- Method of forming a roll body or roll mantle26 Sep 2023US 11,766,714 B2Aktiebolaget Skf
- Rotary batch and cullet preheater system control scheme28 May 2026US 2026/0145979 A1
- Rotary Joint with Adjustable Syphon for Rotating Cylinder2 Oct 2025US 2025/0305607 A1Kadant Johnson LLC
- Rotary reactor12 Jun 2025US 2025/0186942 A1Tohoku University
- A metal rotary heat transfer assembly for a rotary air heat exchanger29 May 2025US 2025/0172354 A1Blazej Kubiak Loscar
- Counterflow Rotary Cooler10 Apr 2025US 2025/0116467 A1Industrial Process Systems, Inc.
Most cited
By later US patents
- Internally heated heat pipe roller43US 3,952,798 AXerox Corporation · 1976
- Rotating heat pipe for air-conditioning40US 3,999,400 A1976
- Heat transfer38US 4,091,264 ASeal Incorporated · 1978
- Discharge for rotating drum blanchers and coolers32US 5,341,729 ALyco Manufacturing, Inc. · 1994
- Machine and method for fabricating a sheet metal structure having a corrugated core31US 5,179,770 ALCOA Laminating Company of America · 1993