US4388335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave baking with metal pans
Assignee: INTERSATE BRANDS Corp
•
Filing: 1981-02-12
•
Granted: 1983-06-14
•
Expires: 2001-02-12
Abstract
Abstract A method of baking bread in metal pans using microwave energy is described. Overall baking time is reduced by a method of combining conventional and microwave baking. In addition, significant reduction in bake time associated with bread was obtained by employing significantly lower levels of microwave energy and metal pans in a simultaneous microwave and conventional oven heat bake process utilizing conventional bake pans. Reduced bakeout and more uniform baking is achieved if microwave energy is applied at 915 MHz and 2450 MHz simultaneously.
Inventors
- 👤 Robert F. Schiffmann
- 👤 Alfred H. Mirman
- 👤 Richard J. Grillo
- 👤 Robert W. Batey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
A; A21; A21D; A21D8/00; A21D8/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
A method for decreasing the time required for baking bread comprising the steps of: providing an individual loaf of bread dough weighing at least approximately one pound in a metal baking pan; proofing said loaf in said baking pan; baking said proofed loaf in said baking pan in a hot air oven at a temperature of 380° to 450° F. for a total baking time of 6 to 14 minutes; and applying to said proofed loaf in said baking pan microwave energy at frequencies of both 915 MHz and 2450 MHz simultaneously at a predetermined total power flux density in said loaf between 6 and 22 watt-hours per pound of bread divided between said frequencies for a minimum of three minutes during said baking step.
Claim 2
Independent Claim
125 words
A method for decreasing the time required for baking bread comprising the steps of: providing an individual loaf of bread dough weighing at least approximately one pound in a metal baking pan; proofing said loaf in said baking pan; baking said proofed loaf in said baking pan in a hot air oven at a temperature of 380° to 450° F. for a total baking time of 6 to 14 minutes; and applying to said proofed loaf in said baking pan microwave energy at frequencies of both 915 MHz and 2450 MHz simultaneously at a predetermined total power flux density in said loaf between 6 and 22 watt-hours per pound of bread divided between said frequencies for a minimum of three minutes during said baking step.
Claim 3
Dependent Claim
15 words
The method recited in claim 1, wherein said hot air is applied under optimum conditions.
Claim 4
Dependent Claim
18 words
The method recited in claim 2, wherein said total power flux density is divided equally between said frequencies.
Claim 5
Dependent Claim
27 words
The method recited in claim 3, wherein a plurality of said loaves are provided, each in an individual metal baking pan and each weighing approximately one pound.
Claim 6
Dependent Claim
35 words
The method recited in claim 2, wherein said frequency of 915 MHz is applied at a predetermined power flux density higher than the power flux density at which said frequency of 2450 MHz is applied.
Claim 7
Dependent Claim
14 words
The method recited in claim 4, wherein said total baking time is eight minutes.
Claim 8
Dependent Claim
43 words
The method recited in claim 6, wherein said baking temperature is approximately 440° F. and said microwave energy is applied for the duration of the baking step at a total power flux density in said loaves of 20 watt-hours per pound of bread.
Claim 9
Dependent Claim
47 words
The method recited in claim 4, wherein said baking temperature is approximately 425° F., said total baking time is 14 minutes, and said microwave energy is applied for the duration of the baking step at a total power flux density of 10 watt-hours per pound of bread.
Claim 10
Dependent Claim
82 words
The method recited in claim 5, wherein a plurality of said loaves are provided, each in an individual metal baking pan and each weighing approximately two pounds, said baking temperature is 450° F., said total baking time is 12 minutes and said microwave energy is applied for the duration of the baking step at a power flux density of 10 watt-hours per pound of bread for said 915 MHz frequency and 5 watt-hours per pound of bread for said 2450 MHz frequency.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |