US4316070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cookware with liquid microwave energy moderator
Assignee: Individual
•
Filing: 1979-08-21
•
Granted: 1982-02-16
•
Expires: 1999-08-21
Abstract
Abstract A moderator for cooking foods evenly in a microwave oven is described. The moderator is in the form of an enclosure having a fluid impervious outer layer. Attached to the inside surfaces of the outer layer is a liquid film forming layer which converts a dielectric fluid placed in contact with the layer into a thin liquid film which surrounds the cooking comestible.
Inventors
- 👤 Robert L. Prosise
- 👤 Algis S. Leveckis
- 👤 Charles L. Gunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:10
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; B65D81/26; B65D81/264; B65D81/34; B65D81/3446; B65D81/3461; B65D2581/00; B65D2581/34; B65D2581/3437; B65D2581/3439; B65D2581/3447; B65D2581/3471; B65D2581/3485; B65D2581/3486; B65D2581/3487; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
75 words
Cookware for cooking foods evenly in a microwave oven comprising a vented enclosure transmissive of microwave energy, being microwave oven compatible up to at least 150° C., said enclosure having an inner layer of liquid of from 4 to 120 mg./cm. 2 , retained by a liquid film forming layer held within said enclosure, said enclosure having an adjusted technical evenness of greater than zero for 10 minutes and a technical evenness rating above 0.3.
Claim 2
Dependent Claim
75 words
Cookware for cooking foods evenly in a microwave oven comprising a vented enclosure transmissive of microwave energy, being microwave oven compatible up to at least 150° C., said enclosure having an inner layer of liquid of from 4 to 120 mg./cm. 2 , retained by a liquid film forming layer held within said enclosure, said enclosure having an adjusted technical evenness of greater than zero for 10 minutes and a technical evenness rating above 0.3.
Claim 3
Dependent Claim
12 words
The cookware of claim 1 wherein the moderated power is above 80%.
Claim 4
Dependent Claim
14 words
The cookware of claim 1 wherein said film forming layer is an absorptive layer.
Claim 5
Dependent Claim
15 words
The cookware of claim 3 wherein said enclosure including an outer layer of polymeric film.
Claim 6
Dependent Claim
16 words
The cookware of claim 4 wherein said absorptive layer is attached to said outer film layer.
Claim 7
Dependent Claim
14 words
The cookware of claim 4 wherein said film and said absorptive layer being integral.
Claim 8
Dependent Claim
13 words
The cookware of claim 4 wherein said film layer is a plastic bag.
Claim 9
Dependent Claim
16 words
The cookware of claim 7 wherein said absorptive layer is from 0.08 to 1.4 millimeters thick.
Claim 10
Dependent Claim
21 words
The cookware of claim 7 wherein said absorbent layer retains an aqueous solution of from 30 to 60 mg./cm. 2 .
Claim 11
Dependent Claim
11 words
The cookware of claim 9 wherein said aqueous solution is water.
Claim 12
Dependent Claim
13 words
The cookware of claim 9 wherein said aqueous solution is electrolyte and water.
Claim 13
Dependent Claim
17 words
The cookware of claim 11 wherein said aqueous solution has from 3 to 25% salt by weight.
Claim 14
Dependent Claim
14 words
The cookware of claim 12 wherein said salt solution has 3% salt by weight.
Claim 15
Dependent Claim
21 words
The cookware of claim 9 wherein the absorptive capacity of said absorptive layer is from 30 to 60 mg./cm. 2 .
Claim 16
Dependent Claim
15 words
The cookware of claim 7 wherein said absorbent layer retains a layer of vegetable oil.
Claim 17
Dependent Claim
31 words
The cookware of claim 7 wherein said cookware includes an inner plastic layer internal of said absorbent layer, said absorbent layer being sandwiched between said bag and said inner plastic layer.
Claim 18
Dependent Claim
14 words
The cookware of claim 7 wherein said bag has a flap and strap closure.
Claim 19
Dependent Claim
13 words
The cookware of claim 7 having an opening for the addition of liquid.
Claim 20
Dependent Claim
20 words
The cookware of claim 7 wherein said enclosure having a reflectivity greater than 0.5% and an absorptivity greater than 4%.
Claim 21
Dependent Claim
14 words
The cookware of claim 1 and wherein said liquid is a continuous liquid film.
Claim 22
Dependent Claim
33 words
The cookware of claim 1 and wherein said film forming layer being a water soluble wetting agent coated on the inner surface of the enclosure, said liquid layer collecting on said inner surface.
Claim 23
Dependent Claim
15 words
The cookware of claim 21 wherein said cookware has a reflectivity of at least 0.2%.
Claim 24
Dependent Claim
9 words
The cookware of claim 22 being a plastic bag.
Claim 25
Dependent Claim
14 words
The cookware of claim 23 wherein said bag has a flap and strap closure.
Claim 26
Dependent Claim
20 words
The cookware of claim 23 wherein said film forming layer is in fluid communication with the interior of the bag.
Claim 27
Dependent Claim
16 words
The cookware of claim 21 wherein said cookware has an absorptivity of from 0.6 to 5%.
Claim 28
Dependent Claim
14 words
The cookware of claim 1 having a technical evenness rating of greater than 0.35.
Claim 29
Dependent Claim
13 words
The cookware of claim 27 having a technical evenness rating greater than 0.4.
Claim 30
Dependent Claim
13 words
The cookware of claim 28 having a technical evenness rating greater than 0.5.
Claim 31
Dependent Claim
12 words
The cookware of claim 1 wherein said enclosure is made of polypropylene.
Claim 32
Dependent Claim
17 words
The cookware of claim 1 wherein said liquid is maintained on both sides of said cooking food.
Claim 33
Dependent Claim
28 words
The cookware of claim 1 wherein said liquid is arranged in a pattern of spaced microwave interactive moderating regions having a technical evenness rating of at least 0.3.
Claim 34
Dependent Claim
73 words
Cookware for cooking foods evenly in a microwave oven comprising a vented enclosure transmissive of microwave energy, being microwave oven compatible above 150° C., said enclosure having an inner layer of liquid of from 4 to 120 mg./cm. 2 , retained by an absorptive liquid film forming layer held within said enclosure, said enclosure having an adjusted technical evenness of greater than zero for 10 minutes and a technical evenness rating above 0.3.
Claim 35
Dependent Claim
73 words
Cookware for cooking foods evenly in a microwave oven comprising a vented enclosure transmissive of microwave energy, being microwave oven compatible above 150° C., said enclosure having an inner layer of liquid of from 4 to 120 mg./cm. 2 , retained by an absorptive liquid film forming layer held within said enclosure, said enclosure having an adjusted technical evenness of greater than zero for 10 minutes and a technical evenness rating above 0.3.
Claim 36
Dependent Claim
12 words
The cookware of claim 33 wherein the moderated power is above 80%.
Claim 37
Dependent Claim
15 words
The cookware of claim 33 wherein said enclosure including an outer layer of polymeric film.
Claim 38
Dependent Claim
16 words
The cookware of claim 35 wherein said absorptive layer is attached to said outer film layer.
Claim 39
Dependent Claim
14 words
The cookware of claim 35 wherein said film and said absorptive layer being integral.
Claim 40
Dependent Claim
13 words
The cookware of claim 35 wherein said film layer is a plastic bag.
Claim 41
Dependent Claim
16 words
The cookware of claim 38 wherein said absorptive layer is from 0.08 to 1.4 millimeters thick.
Claim 42
Dependent Claim
21 words
The cookware of claim 38 wherein said absorbent layer retains an aqueous solution of from 30 to 60 mg./cm. 2 .
Claim 43
Dependent Claim
11 words
The cookware of claim 40 wherein said aqueous solution is water.
Claim 44
Dependent Claim
21 words
The cookware of claim 40 wherein the absorptive capacity of said absorptive layer is from 30 to 60 mg./cm. 2 .
Claim 45
Dependent Claim
13 words
The cookware of claim 38 having an opening for the addition of liquid.
Claim 46
Dependent Claim
14 words
The cookware of claim 33 having a technical evenness rating of greater than 0.35.
Claim 47
Dependent Claim
12 words
The cookware of claim 33 wherein said enclosure is made of polypropylene.
Claim 48
Dependent Claim
17 words
The cookware of claim 33 wherein said liquid is maintained on both sides of said cooking food.
Claim 49
Dependent Claim
28 words
The cookware of claim 33 wherein said liquid is arranged in a pattern of spaced microwave interactive moderating regions having a technical evenness rating of at least 0.3.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |