US3672916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food tray having a laminated closure that is heat-retractable
Assignee: Mass Feeding Corp
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Filing: 1970-08-31
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Granted: 1972-06-27
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Expires: 1990-08-31
Abstract
Abstract A FOOD CONTAINER COMPRISING A TRAY PORTION AND A COMPLEMENTARY CLOSURE MEMBER, SAID CLOSURE MEMBER COMPRISING IN SHEETLIKE LAMINATED FORM, A SHEETLIKE SUPPORT MEMBER OF RELATIVELY HEAT INSENSITIVE MATERIAL HAVING ONE OR MORE APERTURES OF PREDETERMINED SIZE FORMED THEREIN AND A FILM MEMBER OF HEAT SENSITIVE THERMOPLASTIC POLYMERIC MATERIAL SECURED AND LAMINATED TO ONE SURFACE OF SAID SUPPORT MEMBER AND EXTENDING OVER SAID APERTURE OR APERTURES PROVIDING A MOISTURE VAPOR BARRIER IN SAID CLOSURE MEMBER WHICH IN HEAT REACTIVE AT NORMAL COOKING OVEN TEMPERATURES.
Inventors
- 👤 Herbert J Virnig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:54
CPC Classifications
B; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2004; B65D77/2008; B32; B32B; B32B27/00; B32B27/06; B32B27/10; B65D81/00; B65D81/34; B65D81/343; B32B2435/00; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2041; B65D2577/205; Y; Y10; Y10S; Y10S229/00; Y10S229/902; Y10S229/903
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |