B21D 22/027
For flattening the ends of corrugated sheets
Official title: {for flattening the ends of corrugated sheets}
B21D22/027 (For flattening the ends of corrugated sheets) appears on 7 US grants and 2 published applications in this corpus.
Search patents in B21D- Granted patents
- 7
- Published applications
- 2
- Assignees
- 5
- Inventors
- 13
- Latest grant
- 12 Jan 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Heat exchanger folded from a single metal sheet and having two separate chambers12 Jan 2016US 9,234,708 B2NFT Nanofiltertechnik GmbH
- Vehicle bed edge and manufacturing process5 Oct 2004US 6,799,792 B2Pullman Industries, Inc.
- Method and apparatus for flattening corrugated heat exchanger plate6 Mar 1984US 4,434,637 ACaterpillar Tractor Co.
- Method for flattening corrugated heat exchanger plates31 Aug 1982US 4,346,582 ACaterpillar Tractor Co.
- Method for manufacturing metallic ribs on sheet stock29 Aug 1978US 4,109,503 A
Most cited
By later US patents
- Method of manufacturing a heat exchanger body for recuperative exchangers73US 4,099,928 AAktiebolaget Carl Munters · 1978
- Method for manufacturing metallic ribs on sheet stock26US 4,109,503 A1978
- Method of manufacturing a heat exchanger steel13US 4,022,050 ACaterpillar Tractor Co. · 1977
- Method and apparatus for flattening corrugated heat exchanger plate12US 4,434,637 ACaterpillar Tractor Co. · 1984
- Vehicle bed edge and manufacturing process7US 6,799,792 B2Pullman Industries, Inc. · 2004