Patent US3597237A successfully refreshed from Google Patents.
US3597237A
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Method for packaging food products in flexible containers
Assignee: Star Stabilimento Alimentare
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Filing: 1969-01-31
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Granted: 1971-08-03
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Expires: 1989-01-31
Abstract
Abstract METHOD OF PACKAGING A FOODSTUFF IN A STERILILZABLE CONTAINER OF THE ENVELOPE-TYPE MADE OF A FLEXIBLE LAMINATE COMPRISING AN INNER, HEAT-SEALABLE POLYPROPLENE LAYER, WHEREIN ALL SIDES OF THE ENVELOPE ARE FLUID TIGHT SEALED BY A TWIN-BAR HEAT-SEALING SYSTEM, AND WHEREIN THE CLOSING SIDE OF THE FILLED ENVELOPE IS TWIN-BAR SEALED IN VACUUM BY A HEAT IMPULSE AFTER THE SIDE HAS BEEN CLAMPED FLAT BETWEEN ITS SEALING BARS IN COOL CONDITION OF THE LATTER. THE METHOD ALSO INCLUDE STITCH-SEALING THE LIPS OF THE ENVELOPE ON ITS CLOSING SIDE AFTER FILLING, PREPARATORY TO THE HEAT IMPULSE SEALING, AS WELL STERILIZING THE SEALED PACKAGE AND CHROMATOGRAPHICALLY TESTING IT FOR LEAKAGE.
Inventors
- 👤 Giovanni Nughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:25
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/228; B29C65/24; B29C65/30; B29C65/305; B29C65/82; B29C66/00; B29C66/004; B29C66/0042; B29C66/0044; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/349; B29C66/3494; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/71; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C66/7234; B29C66/72341; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/812; B29C66/8122; B29C66/83; B29C66/836; B29C66/84; B29C66/849; B29C66/90; B29C66/91; B29C66/912; B29C66/9121; B29C66/91211; B29C66/91212; B29C66/91231; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/9161; B29C66/91641; B29C66/96; B29C66/961; B32; B32B; B32B27/00; B65; B65B; B65B57/00; B29C65/38; B29C65/8207; B29C65/8246; B29C66/712; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81415; B29C66/81419; B29C66/81433; B29C66/81435; B29C66/82; B29C66/822; B29C66/8221; B29C66/832; B29C66/8324; B29C66/83241; B29C66/91651; B29C66/91655; B29C66/919
Claims Analysis
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |