US3343463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a cross bottom at the end of a flat tubular blank of heat sealable material and bag having a cross bottom so made
Assignee: INGENIOR ET ELWIS FA
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Filing: 1964-02-11
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Granted: 1967-09-26
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Expires: 1984-02-11
Abstract
No abstract record available.
Inventors
- 👤 Nielsen Kurt Georg
- 👤 Jensen Svend Aage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:58
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/08; B31; B31B; B31B2150/00; B31B2150/001; B31B2160/00; B31B2160/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD OF FORMING A CROSS BOTTOM AT THE END OF A FLAT TUBULAR BLANK OF HEAT SEALABLE MATERIAL BY MEANS OF CORNER FLAPS FOLDED ALONG DIAGONAL LINES AND BOTTOM FLAPS FOLDED ALONG LINES EXTENDING LONGITUDINALLY OF THE BOTTOM END OF THE BLANK, CHARACTERIZED BY THE STEP OF CLAMPING THE SAID CORNER AND BOTTOM FLAPS TOGETHER WITH THE ADJOINING END PORTIONS OF THE SIDE WALL OF THE BLANK BETWEEN EXTERIORLY APPLIED HEAT SEALING TOOLS ALONG LINES EXTENDING TRANSVERSELY ACROSS THE BOTTOM, THEREBY TO FORM TRANSVERSE SEALING SEAMS, SEAL PREVENTING AGENT SUCH AS SILICONE BEING BEFOREHAND APPLIED TO THE AREAS OF AT LEAST ONE OF THE SURFACES OF THE CORNER FLAPS AND THE SIDE WALL TO BE CLAMPED AGAINST ONE ANOTHER IN THE TRANSVERSE HEAT SEALING OPERATION.
Claim 2
Independent Claim
126 words
A METHOD OF FORMING A CROSS BOTTOM AT THE END OF A FLAT TUBULAR BLANK OF HEAT SEALABLE MATERIAL BY MEANS OF CORNER FLAPS FOLDED ALONG DIAGONAL LINES AND BOTTOM FLAPS FOLDED ALONG LINES EXTENDING LONGITUDINALLY OF THE BOTTOM END OF THE BLANK, CHARACTERIZED BY THE STEP OF CLAMPING THE SAID CORNER AND BOTTOM FLAPS TOGETHER WITH THE ADJOINING END PORTIONS OF THE SIDE WALL OF THE BLANK BETWEEN EXTERIORLY APPLIED HEAT SEALING TOOLS ALONG LINES EXTENDING TRANSVERSELY ACROSS THE BOTTOM, THEREBY TO FORM TRANSVERSE SEALING SEAMS, SEAL PREVENTING AGENT SUCH AS SILICONE BEING BEFOREHAND APPLIED TO THE AREAS OF AT LEAST ONE OF THE SURFACES OF THE CORNER FLAPS AND THE SIDE WALL TO BE CLAMPED AGAINST ONE ANOTHER IN THE TRANSVERSE HEAT SEALING OPERATION.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |