US3575763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fabricating high impact strength,contoured-bottom bags
Assignee: EIDP Inc
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Filing: 1967-12-07
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Granted: 1971-04-20
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Expires: 1987-12-07
Abstract
Abstract AN IMPROVED METHOD AND APPARATUS FOR FABRICATING HIGH IMPACT STRENGTH, CONTOURED BOTTOM BAGS WHICH COMPRISES ADVANCING A FOLDED HEAT SEALABLE, THERMOPLASTIC WEB, A FIRST SEALING AND SEVERING OPERATION BY A GENERALLY TRIANGULARLY SHAPED KNIFE TO FORM CONTOURED BOTTOM CORNERS, A SECOND SEALING AND SEVERING OPERATION IN A TRANSVERSE DIRECTION TO COMPLETE THE TRANSVERSE SEAMS WHILE MAINTAINING CONTINUITY OF THE SEAMS RESULTING FROM THE TWO SUCCESSIVE OPERATIONS, AND GATHERING THE FABRICATED BAGS.
Inventors
- 👤 Harold E Ramsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:28
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/006; B31B2155/00; B31B2155/001; B31B2155/0014; B31B2160/00; B31B2160/10; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |