US3291375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-ply bag
Assignee: Albemarle Paper Manufacturing Co
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Filing: 1965-05-11
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Granted: 1966-12-13
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Expires: 1985-05-11
Abstract
No abstract record available.
Inventors
- 👤 John G Lepisto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:01
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/10; B29; B29C; B29C63/00; B29C63/26; B65D31/04; B31; B31B; B31B2155/00; B31B2170/00; B31B2170/20; B31B50/00; B31B50/74; B31B50/76; B31B50/80; B31B70/00; B31B70/26; B31B70/261; B31B70/262; B31B70/266
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
173 words
IN A GUSSETED MULTI-PLY BAG THE COMBINATION COMPRISING: (A) A PLURALITY OF NESTED, TUBULAR CONCENTRICALLY ARRANGED OUTER PLIES OF SHEET MATERIAL, (I) SAID PLIES BEING IN THE FORM OF FLATTENED TUBES HAVING FRONT, BACK AND SIDE SURFACES; (II) SAID FLATTENED TUBES HAVING LONGITUDINALLY EXTENDING, SPACED APART FOLD LINES ON EACH SIDE THEREOF ALONG WHICH THE SIDE PORTIONS OF SAID TUBE ARE INFOLDED TO PROVIDE AT LEAST ONE GENERALLY V-SHAPED GUSSET IN EACH OF THE SIDE PORTIONS OF SAID TUBE; (B) AN INNER, SEAMLESS TUBULAR PLY OF PLASTIC MATERIAL RECEIVED IN AND CONFORMING TO THE SHAPE OF SAID OUTER PLIES OF SHEET MATERIAL; (I) SAID INNER, SEAMLESS TUBULAR PLY OF PLASTIC MATERIAL BEING TRANSVERSELY SEALED ADJACENT ONE END THEREOF, SAID SEAL EXTENDING ALONG THE DOUBLE FOLDED PORTIONS IN EACH SIDE PORTION OF SAID PLASTIC MATERIAL WHERE SAID PLASTIC MATERIAL EXTENDS INTO THE GUSSETS OF SAID OUTER PLIES TO PROVIDE A SEAL HAVING A CROSS-SECTIONAL SHAPE OF A Y AT EACH SIDE PORTION; AND (C) MEANS CLOSING THE END OF THE BAG HAVING THE SEAL.
References Cited (Backward Citations)
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Cited
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US2929544A
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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) | 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 |