Patent US3151799A successfully refreshed from Google Patents.
US3151799A
Expired / Lapsed
US
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Packaging tray
Assignee: Dow Chemical Co
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Filing: 1962-04-04
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Granted: 1964-10-06
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Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Earl F Engles
- 👤 Donald A Shmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; B65D81/26; B65D81/261; B65D81/262; B65D65/00; B65D65/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN IMPERFORATE PLASTIC MEAT TRAY HAVING A BOTTOM SURFACE, ELONGATED SPACED RIBS EXTENDING UPWARDLY FROM SAID BOTTOM SURFACE, SAID RIBS HAVING A GENERALLY TRIANGULAR CROSS-SECTION INCLUDING OPPOSITE SIDES MEETING AT AN APEX SURFACE, SAID RIBS BEING SPACED A DISTANCE OF 1/4 TO 1/2 INCH APART, EACH OF SAID RIBS HAVING A HEIGHT GREATER THAN 1/8 INCH AND WITH THE SIDES THEREOF APPROACHING THE APEX SURFACE SO THAT THE OCCLUDED ANGLE IS BETWEEN ABOUT 20 AND 40 DEGREES.
Claim 2
Dependent Claim
77 words
AN IMPERFORATE PLASTIC MEAT TRAY HAVING A BOTTOM SURFACE, ELONGATED SPACED RIBS EXTENDING UPWARDLY FROM SAID BOTTOM SURFACE, SAID RIBS HAVING A GENERALLY TRIANGULAR CROSS-SECTION INCLUDING OPPOSITE SIDES MEETING AT AN APEX SURFACE, SAID RIBS BEING SPACED A DISTANCE OF 1/4 TO 1/2 INCH APART, EACH OF SAID RIBS HAVING A HEIGHT GREATER THAN 1/8 INCH AND WITH THE SIDES THEREOF APPROACHING THE APEX SURFACE SO THAT THE OCCLUDED ANGLE IS BETWEEN ABOUT 20 AND 40 DEGREES.
References Cited (Backward Citations)
US2080125A
Cited
US3067921A
Cited
US3003884A
Cited
US2893877A
Cited
US2918379A
Cited
US3029149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |