B21D 7/0225
Using pulling members
Official title: {using pulling members}
B21D7/0225 (Using pulling members) appears on 6 US grants and 5 published applications in this corpus.
Search patents in B21D- Granted patents
- 6
- Published applications
- 5
- Assignees
- 4
- Inventors
- 13
- Latest grant
- 20 Aug 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 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 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Wedge driven pipe bending machine20 Aug 2013US 8,511,123 B2CRC-Evans Pipeline International, Inc.
- Segmented pipe-bending die25 Feb 2003US 6,523,389 B1
- Method and apparatus for laying pipelines on land5 Jun 1984US 4,452,550 AKoninklijke Bos Kalis Westminster Group N.V.
- Apparatus and method for bending insulated piping8 May 1984US 4,446,713 ACrutcher Resources Corporation
- Pipe bending apparatus2 Feb 1982US 4,313,330 A
- Wedge Driven Pipe Bending Machine19 Dec 2013US 2013/0333434 A1CRC-Evans Pipeline International, Inc.
- Wedge Driven Pipe Bending Machine19 Dec 2013US 2013/0333438 A1CRC-Evans Pipeline International, Inc.
- Wedge Driven Pipe Bending Machine10 Nov 2011US 2011/0271734 A1CRC-Evans Pipeline International, Inc.
- Pipe Bending Machine27 Oct 2011US 2011/0259075 A1
- Tubing bending machine16 Dec 2004US 2004/0250599 A1
Most cited
By later US patents
- Pipe bending apparatus15US 4,313,330 A1982
- Method and apparatus for laying pipelines on land11US 4,452,550 AKoninklijke Bos Kalis Westminster Group N.V. · 1984
- Portable hot pipe bending apparatus3US 3,943,747 ATubeco, Inc. · 1976
- Segmented pipe-bending die3US 6,523,389 B12003
- Apparatus and method for bending insulated piping1US 4,446,713 ACrutcher Resources Corporation · 1984