US3237834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated container and method of making the same
Assignee: Sweetheart Plastics Inc
•
Filing: 1963-07-29
•
Granted: 1966-03-01
•
Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Davis Paul
- 👤 David F Stewart
- 👤 Andre F Commeyras
- 👤 James C White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:46
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/14; B29K; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/712; B29L2031/7132; Y; Y10; Y10S; Y10S220/00; Y10S220/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN INSULATED FOOD CONTAINER COMPRISING A SIDE WALL MADE OF FOAM FILM LAMINATED PLASTIC MATERIAL WITH THE INNER PLY OF THE MATERIAL BEING FOAMED PLASTIC AND THE OUTER PLY BEING FILM, SAID FOAM AND FILM PLIES BEING BONDED TOGETHER OVER FACING SURFACES, SAID INNER FOAM PLY HAVING INCREASING DENSITY ACROSS A PORTION OF ITS CROSS-SECTION WITH A RELATIVELY HIGH DENSITY PORTION OF SAID FOAM FACING AND BONDED TO SAID FILM PLY, PROTUBERANCES PROVIDED IN THE FILM AND IN CORRESPONDING UNDERLYING AREAS OF SAID FOAM, AND AIR-POCKETS DEFINED WITHIN SAID FOAM PLY UNDERLYING AND CO-EXTENSIVE WITH SAID PROTUBERANCES.
Claim 2
Dependent Claim
97 words
AN INSULATED FOOD CONTAINER COMPRISING A SIDE WALL MADE OF FOAM FILM LAMINATED PLASTIC MATERIAL WITH THE INNER PLY OF THE MATERIAL BEING FOAMED PLASTIC AND THE OUTER PLY BEING FILM, SAID FOAM AND FILM PLIES BEING BONDED TOGETHER OVER FACING SURFACES, SAID INNER FOAM PLY HAVING INCREASING DENSITY ACROSS A PORTION OF ITS CROSS-SECTION WITH A RELATIVELY HIGH DENSITY PORTION OF SAID FOAM FACING AND BONDED TO SAID FILM PLY, PROTUBERANCES PROVIDED IN THE FILM AND IN CORRESPONDING UNDERLYING AREAS OF SAID FOAM, AND AIR-POCKETS DEFINED WITHIN SAID FOAM PLY UNDERLYING AND CO-EXTENSIVE WITH SAID PROTUBERANCES.
References Cited (Backward Citations)
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Cited
US3128029A
Cited
US3082484A
Cited
US3082900A
Cited
US3049277A
Cited
US3070253A
Cited
US3131845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |