B28B 21/28
Combined with vibration means
Official title: combined with vibration means
B28B21/28 (Combined with vibration means) appears on 13 US grants and 8 published applications in this corpus.
Search patents in B28B- Granted patents
- 13
- Published applications
- 8
- Assignees
- 9
- Inventors
- 16
- Latest grant
- 9 Oct 2012
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for making precast concrete meter pit9 Oct 2012US 8,282,869 B2Precast Concepts, LLC
- Method and an apparatus for the manufacture of concrete pipes29 Nov 2011US 8,066,931 B2Pedershaab Concrete Technologies A/S
- Counter-rotating compaction head for manufacturing concrete pipes10 Oct 1995US 5,456,590 AEd. Zublin Aktiengesellschaft
- Machine for vertical casting of pipes of concrete or a similar material in a mould system with a distributor wheel12 Sep 1995US 5,449,283 APedershaab A/S
- Vibrators18 Jul 1995US 5,433,523 AInternational Pipe Machinery Corporation
- Packerhead machine18 Aug 2016US 2016/0236374 A1Hawkeye Concrete Products Co.
- Precast concrete meter pit and apparatus for making same31 Jan 2013US 2013/0026162 A1Precast Concepts, LLC
- Method And An Apparatus For The Manufacture Of Concrete Pipes29 Dec 2011US 2011/0318446 A1Pedershaab Concrete Technologies A/S
- Method of fabricating a precast concrete meter pit16 Jul 2009US 2009/0178365 A1Precast Concepts, LLC
- Precast concrete meter pit and method and apparatus for making same2 Apr 2009US 2009/0084793 A1Precast Concepts, LLC
Most cited
By later US patents
- Concrete pipe making machine15US 4,957,424 AHydrotile Machinery Company · 1990
- Vibratory concrete pipe forming apparatus and method12US 4,756,861 A1988
- Machine for making concrete pipes8US 5,147,196 AInternational Pipe Machinery Corporation · 1992
- Method and apparatus for making concrete pipe6US 4,041,118 AAtlantic Pipe Corporation · 1977
- Machine for making concrete pipes6US 5,167,967 AInternational Pipe Machinery Corporation · 1992