US3835281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential microwave heating container
Assignee: Individual
•
Filing: 1973-07-05
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Granted: 1974-09-10
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Expires: 1993-07-05
Abstract
Abstract A differential heating container for cooking food contained therein with microwave radiation comprising an upper and lower container element each including a plurality of ribs which form a plurality of corresponding pockets such that when the container elements are placed together, the corresponding pockets cooperatively form individual food compartments isolated from one another. Opposite sides of each compartment include equal amounts of microwave opaque area which determine the heating effects of the microwave radiation for each individual compartment independent of the remaining compartment. Locking means are formed on the ribs to cooperatively interlock the upper and lower container elements together as an integral differential heating container.
Inventors
- 👤 F Mannix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:02
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D81/3453; B65D2205/00; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3486; B65D2581/3489
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
164 words
A differential heating container for cooking food contained therein with microwave radiation, said differential heating container comprising an upper and lower container element, each of said container elements comprising a base wall having a side wall formed about the periphery thereof, a sealing rim formed about the outer periphery of each of said side walls, separator means extending between at least two points on the inner periphery of each of said side walls to form at least two pockets between said separator means and said side walls, the outer surface of each of said base walls provided with a material opaque to microwave radiation, said opaque areas formed on opposite corresponding portions of each said base walls of said upper and said lower elements, locking means formed on said separator means to interlock said upper and said lower elements such that corresponding pockets cooperatively form individual compartments isolated from each other, said locking means comprising an element extending substantially perpendicular from said separator means.
Claim 2
Dependent Claim
164 words
A differential heating container for cooking food contained therein with microwave radiation, said differential heating container comprising an upper and lower container element, each of said container elements comprising a base wall having a side wall formed about the periphery thereof, a sealing rim formed about the outer periphery of each of said side walls, separator means extending between at least two points on the inner periphery of each of said side walls to form at least two pockets between said separator means and said side walls, the outer surface of each of said base walls provided with a material opaque to microwave radiation, said opaque areas formed on opposite corresponding portions of each said base walls of said upper and said lower elements, locking means formed on said separator means to interlock said upper and said lower elements such that corresponding pockets cooperatively form individual compartments isolated from each other, said locking means comprising an element extending substantially perpendicular from said separator means.
Claim 3
Dependent Claim
54 words
The differential heating container of claim 1 wherein said separator means comprises a rib extending outward from the interior surface of said base wall of each of said upper and said lower elements and interconnecting at least two points on the interior of said side walls of said upper and said lower elements respectively.
Claim 4
Dependent Claim
74 words
The differential heating container of claim 1 wherein said locking means comprises a substantially U-shaped member on the outer edge of said separator means of said upper and said lower elements to cooperatively interlock said upper and said lower elements, said upper and said lower elements interlocked by rotational movement therebetween, said U-shaped members disposed relative to said separator means to interlock said upper and said lower elements against separation due to vertical expansion.
Claim 5
Dependent Claim
37 words
The differential heating container of claim 1 wherein said opposite corresponding portions of said opaque area passing substantially equal amounts of radiation through said opposite corresponding portions of said opaque areas of said upper and lower elements.
Claim 6
Dependent Claim
59 words
The differential heating container of claim 1 wherein said opaque areas comprise opaque portions formed on said base walls of said upper and said loWer container elements such that the heating effect of said microwave radiation is determined by the ratio of said opaque areas of each said compartment relative to the total area of each said corresponding compartments.
Claim 7
Dependent Claim
22 words
The differential heating container of claim 1 wherein said sealing rim includes pressure relief means to vent said compartments to the atmosphere.
Claim 8
Dependent Claim
36 words
The differential heating container of claim 6 wherein said pressure relief means comprises at least one groove formed in said sealing rim, said groove extending axially from the inner to outer edge of said sealing rim.
Claim 9
Dependent Claim
59 words
The differential heating container of claim 1 wherein said laminated areas comprise opaque portions formed on said base walls of said upper and said lower container elements such that the heating effect of said microwave radiation is determined by the ratio of said laminated areas of each said compartment relative to the total area of each said corresponding compartments.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |