Patent US3556816A successfully refreshed from Google Patents.
US3556816A
Expired / Lapsed
US
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Flexible package for foodstuff
Assignee: Star Stabilimento Alimentare
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Filing: 1968-10-21
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Granted: 1971-01-19
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Expires: 1988-10-21
Abstract
Abstract A HEAT-SEALED FLEXIBLE-WALLED FOOD CONTAINER IS FORMED OF LAMINATED MATERIAL COMPRISING AN ALUMINIUM FOIL PROVIDED ON BOTH SURFACES WITH POLYESTER LAYERS AND AN INNER POLYPROPYLENE LAYER BONDED TO ONE OF THE POLYESTER LAYERS, THE ALUMINUM FOIL AND POLYESTER LAYERS FORMING A THERMALLY BALANCED LAMINATE, WHICH PREVENTS THE FORMATION OF MICROSCOPIC CRACKS IN THE ALUMINUM RESULTING FROM THERMAL STRESSES. CRACKING OF THE ALUMINIUM FOIL BY SUBSEQUENT HEAT TREATMENT SUCH AS STERILISATION IS PREVENTED.
Inventors
- 👤 Giovanni Nughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:34
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/26; B32; B32B; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10S; Y10S206/00; Y10S206/811; Y10S206/819
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |