Patent US2865767A successfully refreshed from Google Patents.
US2865767A
Expired / Lapsed
US
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Method of packaging food items
Assignee: Union Carbide Corp
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Filing: 1955-02-04
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Granted: 1958-12-23
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Expires: 1975-02-04
Abstract
No abstract record available.
Inventors
- 👤 Robert A Gore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:46
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2007; B65D81/2023; B65D75/00; B65D75/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A METHOD OF PACKAGING FOOD ITEMS WITH A SKIN TIGHT COVERING THE STEPS WHICH COMPRISE INSERTING THE ITEM TO BE PACKAGED IN A BAG MADE OF A PLASTIC FILM AND SHRINKING THE BAG TO CONFORM TO THE CONTOUR OF SAID ITEM BY SUDDENLY IMMERSING THE BAG AND CONTENTS IN A LIQUID MEDIUM COMPRISING PROPYLENE GLYCOL AT A TEMPERATURE ABOVE 100*C. BUT BELOW THE MELTING POINT OF THE PLASTIC AND MAINTAINING SAID BAG AND CONTENTS IN SAID LIQUID MEDIUM UNTIL SHRINKAGE HAS BEEN EFFECTED.
Claim 2
Dependent Claim
84 words
IN A METHOD OF PACKAGING FOOD ITEMS WITH A SKIN TIGHT COVERING THE STEPS WHICH COMPRISE INSERTING THE ITEM TO BE PACKAGED IN A BAG MADE OF A PLASTIC FILM AND SHRINKING THE BAG TO CONFORM TO THE CONTOUR OF SAID ITEM BY SUDDENLY IMMERSING THE BAG AND CONTENTS IN A LIQUID MEDIUM COMPRISING PROPYLENE GLYCOL AT A TEMPERATURE ABOVE 100*C. BUT BELOW THE MELTING POINT OF THE PLASTIC AND MAINTAINING SAID BAG AND CONTENTS IN SAID LIQUID MEDIUM UNTIL SHRINKAGE HAS BEEN EFFECTED.
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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |