B31B 70/986
Stacking bags by means of a rotary stacking drum
Official title: {Stacking bags by means of a rotary stacking drum}
B31B70/986 (Stacking bags by means of a rotary stacking drum) appears on 14 US grants and 2 published applications in this corpus.
Search patents in B31B- Granted patents
- 14
- Published applications
- 2
- Assignees
- 9
- Inventors
- 21
- Latest grant
- 21 Sep 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Bag blocks21 Sep 2004US 6,793,613 B2Hudson-Sharp Machine Co.
- Flexible bag winding and unwinding apparatus19 Aug 1997US 5,657,943 AKCL Corporation
- Apparatus for stacking flat workpieces on a stacking table3 May 1994US 5,308,056 AWindmoller & Holscher
- Apparatus for stacking flat objects3 Aug 1993US 5,232,325 AWindmoeller & Holscher
- Apparatus for transferring stacks of flexible products16 Feb 1993US 5,185,987 ADowbrands L.P.
Most cited
By later US patents
- Infeed counting conveyor28US 4,357,126 AH. G. Weber & Co., Inc. · 1982
- Automatic bag collating and stacking apparatus21US 4,269,557 AH. G. Weber & Co., Inc. · 1981
- Apparatus for making tank top bags from a web of tubular plastics film provided with side folds14US 4,268,346 AWindmoller & Holscher · 1981
- Apparatus and method for the production of flexible products8US 5,062,825 AThe Dow Chemical Company · 1991
- Apparatus for stacking flat objects7US 5,232,325 AWindmoeller & Holscher · 1993