Patent US3408902A successfully refreshed from Google Patents.
US3408902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making closure for containers
Assignee: US Smokeless Tobacco Co LLC
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Filing: 1966-12-12
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Granted: 1968-11-05
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Voe John M De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:22
CPC Classifications
B; B31; B31D; B31D1/00; B31D1/0043; B31D1/005; B31B; B31B70/00; B31F; B31F1/00; B31F1/0096; B31B2160/00; B31B2160/10; B31B50/00; B31B50/59; B31B50/592
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN THE METHOD OF PRODUCING CONTAINER CLOSURES OF THE TYPE HAVING AN END WALL AND A PERIPHERAL SIDE WALL STRUCTURE, THE STEPS, OF, WETTING A SHEET OF KRAFT-COATED PAPER FOR A SUFFICIENT TIME TO SOFTEN IT, POSITIONING THE SHEET IN A DIE ASSEMBLY WITH A SHEET OR METAL FOIL, CUTTING A BLANK FROM EACH OF SAID SHEETS, SUBJECTING THE SHEETS TO A SIMULTANEOUS SOFT FORMING OPERATION BY PUSHING THE PERIPHERAL SIDE WALL OF THE PAPER BLANK TO THEREBY FORM THE PERIPHERAL PORTIONS OF THE PAPER BLANK AND THE FOIL BLANK INTO AN INTEGRAL SIDE WALL STRUCTURE AGAINST AN INNER SURFACE WHICH CAUSES FOLDS IN THE METAL FOIL TO BE PROJECTED OUTWARDLY AND TO BE EMBEDDED IN THE SOFTENED PAPER, AND DRYING THE PAPER TO CAUSE IT TO SHRINK AND HARDEN.
Claim 2
Dependent Claim
130 words
IN THE METHOD OF PRODUCING CONTAINER CLOSURES OF THE TYPE HAVING AN END WALL AND A PERIPHERAL SIDE WALL STRUCTURE, THE STEPS, OF, WETTING A SHEET OF KRAFT-COATED PAPER FOR A SUFFICIENT TIME TO SOFTEN IT, POSITIONING THE SHEET IN A DIE ASSEMBLY WITH A SHEET OR METAL FOIL, CUTTING A BLANK FROM EACH OF SAID SHEETS, SUBJECTING THE SHEETS TO A SIMULTANEOUS SOFT FORMING OPERATION BY PUSHING THE PERIPHERAL SIDE WALL OF THE PAPER BLANK TO THEREBY FORM THE PERIPHERAL PORTIONS OF THE PAPER BLANK AND THE FOIL BLANK INTO AN INTEGRAL SIDE WALL STRUCTURE AGAINST AN INNER SURFACE WHICH CAUSES FOLDS IN THE METAL FOIL TO BE PROJECTED OUTWARDLY AND TO BE EMBEDDED IN THE SOFTENED PAPER, AND DRYING THE PAPER TO CAUSE IT TO SHRINK AND HARDEN.
References Cited (Backward Citations)
US2832522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |