US3740237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous method for manufacturing hermetically sealed packages having dual seals
Assignee: Oscar Mayer Foods Corp
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Filing: 1970-11-25
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Granted: 1973-06-19
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Expires: 1990-11-25
Abstract
Abstract A CONTINUOUS METHOD OF ENCLOSING A PRODUCT BETWEEN A PAIR OF FILMS SO AS TO PROVIDE A PACKAGE HAVING A PRODUCT ENCLOSING PORTION AND A PERIPHERAL FLANGE. THE PAIR OF FILMS ARE JOINED TO FORM A HERMETIC, DUAL SEAL, BY APPLYING A CONTINUOUS STRIP OF PEELABLE BOND ADHESIVE THRU A PORTION OF THE FILM DESTINED TO BECOME A PERIPHERAL FLANGE AND EXTENDING PARTIALLY INTO THAT PORTION OF THE FILM DESTINED TO BECOME THE PRODUCT ENCLOSING PORTION AND PROVIDING THE REMAINDER OF THE PERIPHERAL FLANGE WITH MEANS FOR PERMANENTLY BONDING THE PAIR OF FILMS. D R A W I N G
Inventors
- 👤 P Grindrod
- 👤 R Goller
- 👤 H Radloff
- 👤 O Seiferth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:20
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/02; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5855; B65D75/26; B65D75/28; B65D75/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |