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US4003514A Expired / Lapsed US ⏱️ 0.0 years remaining

Frozen food tray

Assignee: Graphic Packaging International LLC
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Filing: 1976-01-21
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Granted: 1977-01-18
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Expires: 1996-01-21
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Abstract

Abstract A new and novel tray for storing and reheating frozen food. The base portion of the tray is formed in a one-piece construction having spaced apart hollow side walls and double thickness end walls both side and end walls being adhesively secured to the underside of the tray. Corner web-like folds positioned between inner panels of the side and end walls are held in place by securing flaps on the outer panels and are secured to the tray. The folding of the side walls and end walls in combination with the corner web-like folds makes the interior portion of the tray leakproof. A separate one-piece lid may be adhesively secured to the top of the hollow side walls and to the sides of the end walls to enclose the tray and make a completely leakproof package. In the preferred embodiment the tray and lid of the package are formed generally of paperboard and may be coated with desirable coatings. The package may also be formed with foil laminations on one or both sides thereof.

Inventors

  • 👤 Earl J. Graser

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 12:31
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/20; B65D5/2004; B65D5/2009; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2075; B65D2577/2091

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 304 words
A tray for storing and reheating food comprising a centrally located base portion having a pair of sides and a pair of ends; opposing inner and outer side-wall panels; said side-wall panels connected therebetween by a rim portion to form spaced apart hollow side walls formed on each side of said base portion said inner side-wall panels being hingedly connected and perpendicular to said base portion; said inner side-wall panels having hingedly connected thereto said rim portion which lies parallel to said base portion; said rim portion having hingedly connected thereto said outer side-wall panels on the side opposite said inner side-wall panels; said outer side-wall panels having hingedly connected on the outer edge thereof an elongate flap; said elongate flap being adhesively secured to the underside of said base portion; opposing inner and outer end-wall panels formed on each end of said base portion; said inner end-wall panels being hingedly connected and perperdicular to said base portion; said outer end-wall panels being hingedly connected to said inner end-wall panels; said outer end-wall panels having hingedly connected on the outer edge thereof a narrow flap; said narrow flap being adhesively secured to the underside of said base portion; corner web-like folds hingedly connected and positioned between said inner side-wall panels and said inner end-wall panels; said corner folds having a scoreline in the central portion thereof for folding the interior surfaces of the corner folds against each other; securing flaps formed on said outer side-wall panels; said securing flaps being folded over and disaposed adjacent said corner folds; interior and exterior portions of said tray being formed from foil laminated paperboard; a separate one-piece lid being adhesively secured to the package; said lid having a generally triangular-shaped, reverse cut tear-out portion, and said tear-out portion having a partially glued protuberance at one end thereof.
Claim 2
Dependent Claim 304 words
A tray for storing and reheating food comprising a centrally located base portion having a pair of sides and a pair of ends; opposing inner and outer side-wall panels; said side-wall panels connected therebetween by a rim portion to form spaced apart hollow side walls formed on each side of said base portion said inner side-wall panels being hingedly connected and perpendicular to said base portion; said inner side-wall panels having hingedly connected thereto said rim portion which lies parallel to said base portion; said rim portion having hingedly connected thereto said outer side-wall panels on the side opposite said inner side-wall panels; said outer side-wall panels having hingedly connected on the outer edge thereof an elongate flap; said elongate flap being adhesively secured to the underside of said base portion; opposing inner and outer end-wall panels formed on each end of said base portion; said inner end-wall panels being hingedly connected and perperdicular to said base portion; said outer end-wall panels being hingedly connected to said inner end-wall panels; said outer end-wall panels having hingedly connected on the outer edge thereof a narrow flap; said narrow flap being adhesively secured to the underside of said base portion; corner web-like folds hingedly connected and positioned between said inner side-wall panels and said inner end-wall panels; said corner folds having a scoreline in the central portion thereof for folding the interior surfaces of the corner folds against each other; securing flaps formed on said outer side-wall panels; said securing flaps being folded over and disaposed adjacent said corner folds; interior and exterior portions of said tray being formed from foil laminated paperboard; a separate one-piece lid being adhesively secured to the package; said lid having a generally triangular-shaped, reverse cut tear-out portion, and said tear-out portion having a partially glued protuberance at one end thereof.

References Cited (Backward Citations)

US2447243A Cited
US2495807A Cited
US3301391A Cited
US3606078A Cited
US3572576A Cited
US3917155A Cited
US3810574A Cited
US3863832A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-01-18 1980-07-19 1981-01-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-01-18 1984-07-19 1985-01-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-01-18 1988-07-19 1989-01-18 $7700.00 Window Closed / Lapsed

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