Multi-layer bags
Abstract
Abstract BY PULLING THE CORD WITHOUT BREAKING AT LEAST THE INNERMOST LAYER. 1. A MULTI-LAYER BAG COMPRISING A PLURALITY OF LAYERS OF BAG FORMING MATERIAL, SAID LAYERS BEING SUPERPOSED RELATIVE TO EACH OTHER TO FORM A FRONT SHEET AND A REAR SHEET, GUSSETS FORMED AT BOTH LONGITUDINAL SIDE EDGES OF SAID BAG BETWEEN SAID FRONT SHEET AND SAID REAR SHEET, THE UPPER EDGES OF AT LEAST SOME OF THE LAYERS BEING DISPLACED IN THE LONGITUDINAL DIRECTION TO DEFINE STEPWISE BONDING MARGINS WHICH ARE FOLDED BACK AND BONDED TO SAID FRONT SHEET SO AS TO SEAL THE MOUTH OF SAID BAG, AND A BAG OPENING CORD DISPOSED ACROSS SAID BAG NEAR SAID MOUTH AND SECURED BETWEEN SAID LAYERS WITH THE OPPOSITE ENDS PROJECTING BEYOND SAID SIDE EDGES, SAID CORD BEING POSITIONED SUCH THAT SAID BAG CAN BE OPENED
Inventors
- 👤 A Saito
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |