US3291376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bags
Assignee: Amcor Flexibles North America Inc
•
Filing: 1965-05-05
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Granted: 1966-12-13
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Expires: 1985-05-05
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:47
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A BAG FORMED FROM A FLAT TUBE OF HEAT-SEALABLE SHEET MATERIAL, SAID TUBE HAVING A CLOSURE FORMATION AT ONE END COMPRISING INWARDLY DIRECTED END FLAPS AND FIRST AND SECOND SIDE FLAPS, AND AN INSERT OF HEAT-SEALABLE SHEET MATERIAL EXTENDING BETWEEN THE END FLAPS AND HAVING ITS OUTER END MARGINS LAPPING THE INNER END MARGINS OF SAID END FLAPS, SAID INSERT BEING HEAT-SEALED AT LEASAT AT ONE END MARGIN THEREOF TO THE INNER END MARGIN OF THE RESPECTIVE END FLAP AT ONE END OF SAID CLOSURE FORMATION, SAID SIDE FLAPS BEING FOLDED OVER TO OVERLIE THE END FLAPS AND SAID INSERT, AND BEING HEAT-SEALED TOGETHER, SAID BAG HAVING A COATING OF HEAT-SEAL-INHIBITING MATERIAL ON THE INSIDE OF THE INNER OF SAID LAPPING MARGINS AT SAID ONE END OF SAID CLOSURE FORMATION WHERE SAID ONE END MARGIN OF THE INSERT IS HEAT-SEALED TO THE INNER END MARGIN OF SAID RESPECTIVE FLAP TO INHIBIT BLOCKING OF SAID CLOSURE FORMATION ALONG THIS HEAT SEAL.
Claim 2
Dependent Claim
160 words
A BAG FORMED FROM A FLAT TUBE OF HEAT-SEALABLE SHEET MATERIAL, SAID TUBE HAVING A CLOSURE FORMATION AT ONE END COMPRISING INWARDLY DIRECTED END FLAPS AND FIRST AND SECOND SIDE FLAPS, AND AN INSERT OF HEAT-SEALABLE SHEET MATERIAL EXTENDING BETWEEN THE END FLAPS AND HAVING ITS OUTER END MARGINS LAPPING THE INNER END MARGINS OF SAID END FLAPS, SAID INSERT BEING HEAT-SEALED AT LEASAT AT ONE END MARGIN THEREOF TO THE INNER END MARGIN OF THE RESPECTIVE END FLAP AT ONE END OF SAID CLOSURE FORMATION, SAID SIDE FLAPS BEING FOLDED OVER TO OVERLIE THE END FLAPS AND SAID INSERT, AND BEING HEAT-SEALED TOGETHER, SAID BAG HAVING A COATING OF HEAT-SEAL-INHIBITING MATERIAL ON THE INSIDE OF THE INNER OF SAID LAPPING MARGINS AT SAID ONE END OF SAID CLOSURE FORMATION WHERE SAID ONE END MARGIN OF THE INSERT IS HEAT-SEALED TO THE INNER END MARGIN OF SAID RESPECTIVE FLAP TO INHIBIT BLOCKING OF SAID CLOSURE FORMATION ALONG THIS HEAT SEAL.
References Cited (Backward Citations)
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Cited
US2955517A
Cited
US3004698A
Cited
US3195801A
Cited
US3116002A
Cited
US3220635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |