Patent US3216647A successfully refreshed from Google Patents.
US3216647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial bag
Assignee: Union Carbide Corp
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Filing: 1961-08-10
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Granted: 1965-11-09
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Expires: 1981-08-10
Abstract
No abstract record available.
Inventors
- 👤 Norman Y Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:26
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/14; B65D31/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A STRUCTURE COMPRISING, IN COMBINATION: (A) AN INDUSTRIAL SHIPPING BAG, HAVING A PAIR OF END CLOSURES IN OPPOSITE ENDS OF SAID INDUSTRIAL SHIPPING BAG, EACH OF SAID END CLOSURES BEING FORMED BY A PAIR OF OPPOSED INFOLDED END FLAPS AND A PAIR OF OPPOSED INFOLDED SIDE FLAPS; (B) A FLATTENED, TUBULAR FILLING VALVE COMPRISED OF FLEXIBLE, COLLAPSIBLE THERMOPLASTIC FILM HAVING A SUBSTANTIALLY UNIFORM CROSS-SECTION ALONG ITS LONGIDINAL AXIS AND A SUBSTANTIALLY UNIFORM AND UNINTERRUPTED CIRCUMFERENCE THROUGHOUT SUPPORTED BY AT LEAST ONE OF SAID END CLOSURE BY ONE INFOLDED END FLAP IN SAID CLOSURE OF SAID INDUSTRIAL SHIPPING BAG AND ADHERED TO ONE SIDE OF SAID FLATTENED TUBULAR FILLING VALVE, AND AT LEAST ONE OF THE SAID OPPOSED INFOLDED SIDE FLAPS ADHERED DIRECTLY TO THE OTHER SIDE OF SAID FLATTENED TUBULAR FILLING VALVE AND WITH THE INWARDLY PROTRUDING END OF SAID FLATTENED TUBULAR FILLING VALVE EXTENDING BEYOND THE TRANSVERSE EDGE OF SAID INFOLDED END FLAP INTO THE BODY OF SAID INDUSTRIAL SHIPPING BAG IN AN AMOUNT SUFFICIENT TO CAUSE THE INTERNALLY EXTENDING PORTION OF SAID FLATTENED TUBULAR FILLING VALVE TO COLLAPSE AND FORM A
Claim 2
Dependent Claim
183 words
A STRUCTURE COMPRISING, IN COMBINATION: (A) AN INDUSTRIAL SHIPPING BAG, HAVING A PAIR OF END CLOSURES IN OPPOSITE ENDS OF SAID INDUSTRIAL SHIPPING BAG, EACH OF SAID END CLOSURES BEING FORMED BY A PAIR OF OPPOSED INFOLDED END FLAPS AND A PAIR OF OPPOSED INFOLDED SIDE FLAPS; (B) A FLATTENED, TUBULAR FILLING VALVE COMPRISED OF FLEXIBLE, COLLAPSIBLE THERMOPLASTIC FILM HAVING A SUBSTANTIALLY UNIFORM CROSS-SECTION ALONG ITS LONGIDINAL AXIS AND A SUBSTANTIALLY UNIFORM AND UNINTERRUPTED CIRCUMFERENCE THROUGHOUT SUPPORTED BY AT LEAST ONE OF SAID END CLOSURE BY ONE INFOLDED END FLAP IN SAID CLOSURE OF SAID INDUSTRIAL SHIPPING BAG AND ADHERED TO ONE SIDE OF SAID FLATTENED TUBULAR FILLING VALVE, AND AT LEAST ONE OF THE SAID OPPOSED INFOLDED SIDE FLAPS ADHERED DIRECTLY TO THE OTHER SIDE OF SAID FLATTENED TUBULAR FILLING VALVE AND WITH THE INWARDLY PROTRUDING END OF SAID FLATTENED TUBULAR FILLING VALVE EXTENDING BEYOND THE TRANSVERSE EDGE OF SAID INFOLDED END FLAP INTO THE BODY OF SAID INDUSTRIAL SHIPPING BAG IN AN AMOUNT SUFFICIENT TO CAUSE THE INTERNALLY EXTENDING PORTION OF SAID FLATTENED TUBULAR FILLING VALVE TO COLLAPSE AND FORM A
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |