Patent US3226236A successfully refreshed from Google Patents.
US3226236A
Expired / Lapsed
US
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Method of forming a food package
Assignee: Kitchens of Sara Lee Inc
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Filing: 1964-03-12
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Granted: 1965-12-28
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Expires: 1984-03-12
Abstract
No abstract record available.
Inventors
- 👤 Berthold L Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:42
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/22; B65D77/24; B65D77/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METHOD OF PACKAGING A FOOD PRODUCT COMPRISING: THE STEPS OF PLACING THE PRODUCT WITHIN A PAN; PLACING A HEAT SHRINKABLE FLEXIBLE SHEET OVER THE PRODUCT SO THAT THE OUTER PERIPHERY OF SAID SHEET OVERHANGS THE OUTER PERIPHERY OF SAID PAN PLACING A COVER OVER THE FLEXIBLE SHEET; CONNECTING TOGETHER THE OUTER PERIPHERIES OF SAID PAN, SHEET AND COVER; HERMETICALLY SEALING THE OUTER PERIPHERY OF THE SHEET TO THE OUTER PERIPHERY OF THE PAN; AND HEAT SHRINKING THE SHEET SO THAT IT ENGAGES THE UPPER SURFACE OF THE PRODUCT UNDER TENSION TO URGE THE PRODUCT DOWNWARDLY AGAINST THE PAN AND TO CONFORM APPROXIMATELY TO THE CONTOUR OF SAID PRODUCT UPPER SURFACE.
Claim 2
Independent Claim
111 words
A METHOD OF PACKAGING A FOOD PRODUCT COMPRISING: THE STEPS OF PLACING THE PRODUCT WITHIN A PAN; PLACING A HEAT SHRINKABLE FLEXIBLE SHEET OVER THE PRODUCT SO THAT THE OUTER PERIPHERY OF SAID SHEET OVERHANGS THE OUTER PERIPHERY OF SAID PAN PLACING A COVER OVER THE FLEXIBLE SHEET; CONNECTING TOGETHER THE OUTER PERIPHERIES OF SAID PAN, SHEET AND COVER; HERMETICALLY SEALING THE OUTER PERIPHERY OF THE SHEET TO THE OUTER PERIPHERY OF THE PAN; AND HEAT SHRINKING THE SHEET SO THAT IT ENGAGES THE UPPER SURFACE OF THE PRODUCT UNDER TENSION TO URGE THE PRODUCT DOWNWARDLY AGAINST THE PAN AND TO CONFORM APPROXIMATELY TO THE CONTOUR OF SAID PRODUCT UPPER SURFACE.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |