US4871892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooking utensil useful for assuring destruction of harmful bacteria during microwave cooking of poultry and other foods
Assignee: General Housewares Corp
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Filing: 1988-12-22
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Granted: 1989-10-03
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Expires: 2008-12-22
Abstract
Abstract A microwave cooking utensil useful for assuring destruction of Salmonella or other harmful bacteria present in cooking liquids during the cooking of poultry including an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing the outer container, and an apertured rack for supporting, essentially in contact thereon, a food product. The rack is made of heat-conductive, microwave-reflective material and includes a support to hold the rack above the bottom surface of the container so that the rack and the bottom surface define a chamber to receive cooking liquids. The rack has a first set of apertures proximate to its periphery large enough, and with a total area large enough, to permit passage therethrough, during the normal poultry cooking cycle, of sufficient microwave energy to pasteurize any Salmonella bacteria present in the cooking liquids. The total area of the first set of apertures should be small enough, however, so that total microwave energy passing through them will not prevent condensation of steam in the chamber. The rack has an optional second set of apertures therein large enough to permit the passage of the cooking liquids and small enough to be substantially impermeable to microwave energy, so that cooking liquids are quickly removed from the vicinity of the food being cooked.
Inventors
- 👤 Dean A. Samford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:45
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/05; A23B2/08; A47; A47J; A47J36/00; A47J36/02; A47J36/027; A47J36/16; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
203 words
A microwave cooking utensil useful for assuring destruction of harmful bacteria occurring in cooking liquids during the cooking of poultry in a microwave oven, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting, essentially in contact thereon, a chicken or other food product, said rack being made of heat-conductive, microwave-reflective material, means for supporting said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for said cooking liquids, a set of apertures in said upper surface, each aperture in said set being large enough to permit the passage of microwave energy therethrough, said set of apertures having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize said harmful bacteria present in said cooking liquids, and small enough so that the microwave energy passing therethrough is not great enough to prevent condensation of said cooking liquids within said chamber, whereby the user is protected from the threat of bacterial ingestion and infection from said cook liquids.
Claim 2
Dependent Claim
203 words
A microwave cooking utensil useful for assuring destruction of harmful bacteria occurring in cooking liquids during the cooking of poultry in a microwave oven, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting, essentially in contact thereon, a chicken or other food product, said rack being made of heat-conductive, microwave-reflective material, means for supporting said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for said cooking liquids, a set of apertures in said upper surface, each aperture in said set being large enough to permit the passage of microwave energy therethrough, said set of apertures having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize said harmful bacteria present in said cooking liquids, and small enough so that the microwave energy passing therethrough is not great enough to prevent condensation of said cooking liquids within said chamber, whereby the user is protected from the threat of bacterial ingestion and infection from said cook liquids.
Claim 3
Dependent Claim
31 words
A microwave cooking utensil as set forth in claim 1 in which the apertures of said set are proximate to the periphery of said upper surface and near the ends thereof.
Claim 4
Dependent Claim
172 words
A microwave cooking utensil useful for assuring destruction of harmful bacteria occurring in cooking liquids during the cooking of poultry in a microwave oven, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting, essentially in contact thereon, a chicken or other food product, said rack being made of heat-conductive said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for said cooking liquids, a set of apertures in said upper surface, each aperture in said set being large enough to permit the passage of microwave energy therethrough, said set having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize said harmful bacterial present in said cooking liquids, whereby the user is protected from the threat of bacterial ingestion and infection from said cooking liquids.
Claim 5
Dependent Claim
172 words
A microwave cooking utensil useful for assuring destruction of harmful bacteria occurring in cooking liquids during the cooking of poultry in a microwave oven, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting, essentially in contact thereon, a chicken or other food product, said rack being made of heat-conductive said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for said cooking liquids, a set of apertures in said upper surface, each aperture in said set being large enough to permit the passage of microwave energy therethrough, said set having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize said harmful bacterial present in said cooking liquids, whereby the user is protected from the threat of bacterial ingestion and infection from said cooking liquids.
Claim 6
Dependent Claim
43 words
A microwave cooking utensil as set forth in claim 3 in which said harmful bacteria is Salmonella bacteria and in which said set has six apertures, each with a diameter of about 3/4 inch, for a total area of about 2.65 square inches.
Claim 7
Dependent Claim
35 words
A microwave cooking utensil as set forth in claim 3 in which said upper surface is depressed in the vicinity of said apertures, whereby said cooking liquids are better enabled to drain through said apertures.
Claim 8
Dependent Claim
18 words
A microwave cooking utensil as set forth in claim 3 in which said set of apertures are tune.
Claim 9
Dependent Claim
222 words
A microwave cooking utensil for assuring destruction of Salmonella bacteria occurring in cooking liquids during the microwave cooking of poultry, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting said poultry, said rack being made of heat-conductive, microwave-reflective material, means for supporting said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for collection of said cooking liquids, a set of one or more apertures in said upper surface proximate to the periphery thereof, each aperture in said set being large enough to permit the passage of microwave energy and said cooking liquids therethrough, said set having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize any Salmonella bacteria present in said cooking liquids, and a second set of apertures in said upper surface, said second set of apertures being large enough to permit the passage of said cooking liquids and small enough to be substantially impermeable to microwave energy, whereby said cooking liquids may more readily enter said chamber and the user is protected from threat of Salmonella infection from said cooking liquids.
Claim 10
Dependent Claim
222 words
A microwave cooking utensil for assuring destruction of Salmonella bacteria occurring in cooking liquids during the microwave cooking of poultry, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting said poultry, said rack being made of heat-conductive, microwave-reflective material, means for supporting said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for collection of said cooking liquids, a set of one or more apertures in said upper surface proximate to the periphery thereof, each aperture in said set being large enough to permit the passage of microwave energy and said cooking liquids therethrough, said set having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize any Salmonella bacteria present in said cooking liquids, and a second set of apertures in said upper surface, said second set of apertures being large enough to permit the passage of said cooking liquids and small enough to be substantially impermeable to microwave energy, whereby said cooking liquids may more readily enter said chamber and the user is protected from threat of Salmonella infection from said cooking liquids.
Claim 11
Dependent Claim
177 words
A microwave cooking utensil for assuring destruction of Salmonella bacteria occurring in cooking liquids during the microwave cooking of poultry, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting said poultry, said rack being made of heat-conductive, microwave-reflective material, means for supporting said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for collection of said cooking liquids, and a set of one or more apertures in said upper surface proximate to the periphery thereof, each aperture in said set being large enough to permit the passage of microwave energy and said cooking liquids therethrough, said set having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize any Salmonella bacteria present in said cooking liquids, whereby the user is protected from threat of Salmonella infection from said cooking liquids.
Claim 12
Dependent Claim
177 words
A microwave cooking utensil for assuring destruction of Salmonella bacteria occurring in cooking liquids during the microwave cooking of poultry, said utensil including: an outer container made of microwave reflective material, a microwave transmissive steam-confining cover enclosing said outer container, a rack for supporting said poultry, said rack being made of heat-conductive, microwave-reflective material, means for supporting said rack above the bottom surface of said container with the upper surface of said rack being spaced above said bottom surface, said rack and said bottom surface defining a chamber for collection of said cooking liquids, and a set of one or more apertures in said upper surface proximate to the periphery thereof, each aperture in said set being large enough to permit the passage of microwave energy and said cooking liquids therethrough, said set having a total area large enough to permit passage therethrough, during a normal poultry cooking cycle, of sufficient microwave energy to pasteurize any Salmonella bacteria present in said cooking liquids, whereby the user is protected from threat of Salmonella infection from said cooking liquids.
Claim 13
Dependent Claim
41 words
A microwave cooking utensil as set forth in claim 8, in which said set of apertures has an area large enough to heat said cooking liquids to at least 140? F. for at least 3.5 minutes during said poultry cooking cycle.
Claim 14
Dependent Claim
40 words
A microwave cooking utensil as set forth in claim 8 in which said set of apertures has a total area small enough so that microwave energy passing therethrough is not great enough to prevent condensation of steam within said chamber.
Claim 15
Dependent Claim
25 words
A microwave cooking utensil as set forth in claim 8 in which said total area of said set of apertures is about 2.65 square inches.
Claim 16
Dependent Claim
27 words
A microwave cooking utensil as set forth in claim 11 in which said set of apertures has six apertures, each with a diameter of about 3/4 inch.
Claim 17
Dependent Claim
30 words
A microwave cooking utensil as set forth in claim 8 in which said means for supporting said rack is a downwardly depending flange about the entire periphery of said rack.
Claim 18
Dependent Claim
31 words
A microwave cooking utensil as set forth in claim 8 in which the size and shape of said rack is substantially coextensive with the size and shape of said bottom surface.
Claim 19
Dependent Claim
23 words
A microwave cooking utensil as set forth in claim 8 in including means for electrically and thermally insulating said rack from said container.
Claim 20
Dependent Claim
26 words
A microwave cooking utensil as set forth in claim 15 in which said insulating means is a porcelain coating on the inner surface of said container.
Claim 21
Dependent Claim
31 words
A microwave cooking utensil as set forth in claim 8 in which said rack is electrically and thermally insulated from said container by a porcelain coating on said downwardly depending flange.
Claim 22
Dependent Claim
18 words
A microwave cooking utensil as set forth in claim 8 in which said set of apertures is tuned.
Claim 23
Dependent Claim
183 words
A rack structure for supporting poultry in a microwave reflective container having sides and a bottom, said rack structure being adapted to kill Salmonella organisms, said rack structure being made of microwave reflective material and including a surface for holding said poultry in said container, said surface being shaped and dimensioned to cover substantially the entire said bottom of said container, a downwardly depending flange about the entire periphery of said surface for supporting said surface above said bottom to thereby define a substantially closed chamber between said bottom and said surface to receive cooking liquids and steam from poultry being cooked, a set of apertures in said surface, said set of apertures being large enough to permit the passage therethrough an into said chamber of microwave energy, said set having a total area large enough to permit passage of sufficient microwave energy, during a normal cooking cycle, to pasteurize Salmonella bacteria present in said cooking liquids, said set of apertures being positioned proximate to the periphery of said surface and said apertures and having a total area of about 2.65 square inches.
Claim 24
Dependent Claim
183 words
A rack structure for supporting poultry in a microwave reflective container having sides and a bottom, said rack structure being adapted to kill Salmonella organisms, said rack structure being made of microwave reflective material and including a surface for holding said poultry in said container, said surface being shaped and dimensioned to cover substantially the entire said bottom of said container, a downwardly depending flange about the entire periphery of said surface for supporting said surface above said bottom to thereby define a substantially closed chamber between said bottom and said surface to receive cooking liquids and steam from poultry being cooked, a set of apertures in said surface, said set of apertures being large enough to permit the passage therethrough an into said chamber of microwave energy, said set having a total area large enough to permit passage of sufficient microwave energy, during a normal cooking cycle, to pasteurize Salmonella bacteria present in said cooking liquids, said set of apertures being positioned proximate to the periphery of said surface and said apertures and having a total area of about 2.65 square inches.
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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) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |