US4990734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preparing filtered coffee by use of microwave energy
Assignee: Individual
•
Filing: 1988-12-13
•
Granted: 1991-02-05
•
Expires: 2008-12-13
Abstract
Abstract An apparatus for preparing filtered coffee by use of microwave energy includes a vessel for containing the filtered coffee and a container having a single compartment for receiving and retaining a non-heated coffee mixture of coffee grounds and water. The vessel has a vessel opening formed therein and the container includes an outlet adapted to be received by the vessel opening to pass the coffee mixture therethrough to the vessel. Heating means heats the coffee mixture through exposure to microwave energy. A filter means is disposed across the outlet and includes a resistance to flow which is slight enough that the heated mixture passes through a filter to emerge as a filtered coffee.
Inventors
- 👤 Paul Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:02
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/04; A47J31/043; A23; A23F; A23F5/00; A23F5/24; A23F5/26; A47J31/44; A47J31/54; A47J31/547; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
112 words
Apparatus for preparing filtered coffee by use of microwave energy comprising: a vessel for containing said filtered coffee, said vessel having a vessel opening formed therein; a container including a single compartment for receiving and retaining a non-heated coffee mixture of coffee grounds and water, said container including an outlet adapted to be received by said vessel opening to pass said coffee mixture therethrough to said vessel; means to heat said coffee mixture through exposure to microwave energy; and filter means disposed across said outlet, said filter means having a resistance to flow which is slight enough that said heated coffee mixture passes through said filter to emerge as said filtered coffee.
Claim 2
Dependent Claim
112 words
Apparatus for preparing filtered coffee by use of microwave energy comprising: a vessel for containing said filtered coffee, said vessel having a vessel opening formed therein; a container including a single compartment for receiving and retaining a non-heated coffee mixture of coffee grounds and water, said container including an outlet adapted to be received by said vessel opening to pass said coffee mixture therethrough to said vessel; means to heat said coffee mixture through exposure to microwave energy; and filter means disposed across said outlet, said filter means having a resistance to flow which is slight enough that said heated coffee mixture passes through said filter to emerge as said filtered coffee.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1, wherein said filter means includes filter paper.
Claim 4
Dependent Claim
15 words
The apparatus of claim 1, wherein said container is completely closed except for said outlet.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1, wherein said includes means to allow steam to escape when said mixture is exposed to microwave energy.
Claim 6
Dependent Claim
20 words
The apparatus of claim 4, wherein said means to allow steam to escape includes an orifice formed in said container.
Claim 7
Dependent Claim
37 words
The apparatus of claim 1, wherein said filter means is supported at said outlet by a support means adapted to resist downward movement towards said vessel until a preset internal pressure level is exceeded in said container.
Claim 8
Dependent Claim
31 words
The apparatus of claim 1, wherein said container has a vent opening formed therein and said vessel is sealed by said container when said outlet is received by said vessel opening.
Claim 9
Dependent Claim
19 words
The apparatus of claim 1 wherein the walls of said vessel are at least partially pervious to microwave energy.
Claim 10
Dependent Claim
15 words
The apparatus of claim 1, wherein said vessel opening includes a neck portion formed therein.
Claim 11
Dependent Claim
47 words
The apparatus of claim 9, wherein said container has a bottom portion in which said outlet is defined; and, a sealing means disposed between said neck portion and said bottom portion of said container to seal said vessel when said outlet is received by said vessel opening.
Claim 12
Dependent Claim
31 words
The apparatus of claim 10 wherein said sealing means includes a flexible cuff secured to said bottom portion of said container and adapted to fit around said neck of said vessel.
Claim 13
Dependent Claim
13 words
The apparatus of claim 1, wherein said vessel is impervious to microwave energy.
Claim 14
Dependent Claim
18 words
The apparatus of claim 1, further including means to block said filter means from exposure to microwave energy.
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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) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |