Patent US3087670A successfully refreshed from Google Patents.
US3087670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valved thermoplastic bags
Assignee: Monsanto Chemicals Ltd
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Filing: 1961-11-16
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Granted: 1963-04-30
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Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Chester D Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:12
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A VALVED BAG COMPRISING IN COMBINATION A NONGUSSETED TUBULAR BODY OF THERMOPLASTIC FILM THAT IS HEAT SEALED ACROSS ITS TOP AND BOTTOM, A TOP CORNER OF SAID TUBULAR BODY BEING FOLDED INTO THE TOP OF THE BAG AND CONSISTUTING A VALVE FLAP, AND A RECTANGULAR VALVE SLEEVE OF THEREMOPLASTIC FILM THAT IS HEAT SEALED ALONG ONE EDGE TO THE VALVE FLAP AND HAS TWO OF ITS PARALLEL EDGES SEALED INTO THE INTERIOR OF THE HEAT SEAL AT THE TOP OF THE BAG; THE THERMOPLASTIC FILM OF THE VALVE SLEEVE BEING MEMBRANELIKE IN EFFECT AND OF A SUBSTANTIALLY TINNER GAUGE THAN THE THERMOPLASTIC FILM OF THE TUBULAR BAG BODY; THE HEAT SEAL OF THE TOP OF THE BAG EXTENDING BEYOND THE HEAT SEAL WHICH ATTACHES THE VALVE SLEEVE TO THE VALVE FLAP.
Claim 2
Dependent Claim
131 words
A VALVED BAG COMPRISING IN COMBINATION A NONGUSSETED TUBULAR BODY OF THERMOPLASTIC FILM THAT IS HEAT SEALED ACROSS ITS TOP AND BOTTOM, A TOP CORNER OF SAID TUBULAR BODY BEING FOLDED INTO THE TOP OF THE BAG AND CONSISTUTING A VALVE FLAP, AND A RECTANGULAR VALVE SLEEVE OF THEREMOPLASTIC FILM THAT IS HEAT SEALED ALONG ONE EDGE TO THE VALVE FLAP AND HAS TWO OF ITS PARALLEL EDGES SEALED INTO THE INTERIOR OF THE HEAT SEAL AT THE TOP OF THE BAG; THE THERMOPLASTIC FILM OF THE VALVE SLEEVE BEING MEMBRANELIKE IN EFFECT AND OF A SUBSTANTIALLY TINNER GAUGE THAN THE THERMOPLASTIC FILM OF THE TUBULAR BAG BODY; THE HEAT SEAL OF THE TOP OF THE BAG EXTENDING BEYOND THE HEAT SEAL WHICH ATTACHES THE VALVE SLEEVE TO THE VALVE FLAP.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |