Patent US3248042A successfully refreshed from Google Patents.
US3248042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic bag
Assignee: Union Carbide Corp
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Filing: 1962-12-26
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Granted: 1966-04-26
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Howard E Kasting
- 👤 John P Sachs
- 👤 Edward M Gadomski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:36
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A HEAT-SEALABLE THERMOPLASTIC BAG FORMED FROM A UNITARY BAG BLANK OF FLATTENED THERMOPLASTIC FILM TUBE HAVING, AT LEAST AT ONE END, A RECTANGULAR CLOSURE COMPRISING, IN COMBINATION, A PAIR OF OPPOSED, SIMILAR, INFOLDED END TABS EACH HAVING A TONGUE ON THE END THEREOF, WHICH TONGUES ARE OUTFOLDED OVER THE UPPER SURFACE OF THER RESPECTIVE INFOLDED END TABS, HEAT-SEALS AT EACH CORNER OF SAID INFOLDED END TABS WHICH DIAGONALLY SEAL SAID END TABS TO THE ADJACENT SIDE WALLS OF SAID BAG IN THEIR COMMON AREAS OF OVERLAP, A PAIR OF SIMILAR, OPPOSED SIDE FLAPS INFOLDED IN OVERLAPPING RELATIONSHIP WITH RESPECT TO EACH OTHER AND TO SAID OUTFOLDED TONGUES, A FIRST PAIR OF PARALLEL AND CONTINUOUS HEAT-SEALS WHICH SEAL SAID INFOLDED AND OVERLAPPING SIDE FLAPS TO EACH OTHER AND TO THE UNDERLYING, OUTFOLDED TONGUES IN THEIR COMMON AREAS OF OVERLAP, SAID FIRST PAIR OF PARALLEL HEAT-SEALS BEING SUBSTNTIALLY PARLLEL TO SAID SIDE WALLS, AND TWO PARI OF PARALLEL HEAT-SEALS WHICH SEAL SAID INFOLDED AND OVERLAPPING SIDE FLAPS AND SAID OUTFOLDED TONGUES TO EACH OTHER IN THEIR COMON AREAS OF OVERLAP, EACH PAIR OF SAID TWO PAIR OF PARALLEL HEAT-SEALS BEING SUBSTANTIALLY TRANSVERSE TO SAID FIRST PAIR OF PARALLEL HEAT-SEALS AND INTERSECTING THE DIAGONAL HEAT-SEALS AT EACH CORNER OF SAID INFOLDED END TABS.
Claim 2
Dependent Claim
210 words
A HEAT-SEALABLE THERMOPLASTIC BAG FORMED FROM A UNITARY BAG BLANK OF FLATTENED THERMOPLASTIC FILM TUBE HAVING, AT LEAST AT ONE END, A RECTANGULAR CLOSURE COMPRISING, IN COMBINATION, A PAIR OF OPPOSED, SIMILAR, INFOLDED END TABS EACH HAVING A TONGUE ON THE END THEREOF, WHICH TONGUES ARE OUTFOLDED OVER THE UPPER SURFACE OF THER RESPECTIVE INFOLDED END TABS, HEAT-SEALS AT EACH CORNER OF SAID INFOLDED END TABS WHICH DIAGONALLY SEAL SAID END TABS TO THE ADJACENT SIDE WALLS OF SAID BAG IN THEIR COMMON AREAS OF OVERLAP, A PAIR OF SIMILAR, OPPOSED SIDE FLAPS INFOLDED IN OVERLAPPING RELATIONSHIP WITH RESPECT TO EACH OTHER AND TO SAID OUTFOLDED TONGUES, A FIRST PAIR OF PARALLEL AND CONTINUOUS HEAT-SEALS WHICH SEAL SAID INFOLDED AND OVERLAPPING SIDE FLAPS TO EACH OTHER AND TO THE UNDERLYING, OUTFOLDED TONGUES IN THEIR COMMON AREAS OF OVERLAP, SAID FIRST PAIR OF PARALLEL HEAT-SEALS BEING SUBSTNTIALLY PARLLEL TO SAID SIDE WALLS, AND TWO PARI OF PARALLEL HEAT-SEALS WHICH SEAL SAID INFOLDED AND OVERLAPPING SIDE FLAPS AND SAID OUTFOLDED TONGUES TO EACH OTHER IN THEIR COMON AREAS OF OVERLAP, EACH PAIR OF SAID TWO PAIR OF PARALLEL HEAT-SEALS BEING SUBSTANTIALLY TRANSVERSE TO SAID FIRST PAIR OF PARALLEL HEAT-SEALS AND INTERSECTING THE DIAGONAL HEAT-SEALS AT EACH CORNER OF SAID INFOLDED END TABS.
References Cited (Backward Citations)
US519398A
Cited
US2004041A
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US2346292A
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FR981487A
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US2771010A
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US2830750A
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US2904241A
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US3117711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |