Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7837606 | Method for the production of bags | Uwe Koehn, Siegfried Maneke, Jan Weber | 2010-11-23 |
| 6899663 | Method for producing loop handle shopping bags | — | 2005-05-31 |
| 6474050 | Device for filling and sealing sacks | — | 2002-11-05 |
| 6443617 | Resealable sack or bag | — | 2002-09-03 |
| 6401439 | Device for manufacturing, filling and sealing sacks | Hans-Ludwig Voss | 2002-06-11 |
| 5322096 | Filling device | Heinz Eschmann | 1994-06-21 |
| 5282351 | Method for making, filling and sealing sacks | — | 1994-02-01 |
| 5271206 | Method for making, filling, and sealing sacks | — | 1993-12-21 |
| 5086609 | Method and an apparatus for producing, filling and sealing bags | — | 1992-02-11 |
| 5005341 | Apparatus for filling sacks | — | 1991-04-09 |
| 4913765 | Apparatus for making bags or sacks from a preferably gusseted continuous tubular film of thermoplastic plastic | Helmut Huwelmann | 1990-04-03 |
| 4873815 | Apparatus for filling and closing sacks which are open at one end | Heinz Eschmann, Helmut Huwelmann | 1989-10-17 |
| 4756142 | Apparatus for closing filled sacks | Heinz Eschmann | 1988-07-12 |
| 4736940 | Apparatus for aligning an opening of a sack | Helmut Huwelmann | 1988-04-12 |
| 4628535 | Large sack comprising a double-walled outer sack and an inserted inner sack | — | 1986-12-09 |
| 4580391 | Apparatus for infolding laterally protruding wings of a filled sack onto adhesive strips provided on the top of the sack | Helmut Huwelmann, Walter Eckhard | 1986-04-08 |
| 4574560 | Apparatus for closing filled sacks | Helmut Huwelmann | 1986-03-11 |
| 4537013 | Bag-filling apparatus | Heinz Eschmann | 1985-08-27 |
| 4305241 | Method and apparatus for suspending large sacks from the filling funnel of a sack-filling apparatus | Helmut Huwelmann | 1981-12-15 |
| 4300600 | Method and apparatus for filling sacks with an amount of pourable material determined by their weight | Hermann Oelrich | 1981-11-17 |
| 4258524 | Apparatus for folding onto themselves the flattened filling apertures of large sacks and for closing same by closure strips | Helmut Huwelmann | 1981-03-31 |
| 4257209 | Apparatus for gathering the flattened filling ends of filled large sacks by means of zig-zag folding | Helmut Huwelmann | 1981-03-24 |
| 4257210 | Apparatus for laterally turning over the flattened filling end of filled large sacks for preparing the sack closure | Helmut Huwelmann | 1981-03-24 |
| 4249361 | Method of fully automatically filling and closing large sacks | Helmut Huwelmann | 1981-02-10 |
| 4226458 | Lifting tackle for filled sacks | Fritz Achelpohl | 1980-10-07 |