US5041325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave food package and grease absorbent pad therefor
Assignee: 3M Co
•
Filing: 1989-06-12
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Granted: 1991-08-20
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Expires: 2009-06-12
Abstract
Abstract A package of food containing a substantial amount of water and solidified grease that can be cooked within the package in a microwave oven. A pad adjacent the food comprises microwave radiation transparent generally hydrophobic liquid grease absorbing materials that are capable of holding the amount of grease in the food when it is melted; and a vapor tight microwave radiation transparent enclosure surrounding the pad and food includes means for venting steam from the enclosure as the food is cooked. Preferably, the pad is produced from microfibers constructed of a composition comprising a blend containing substantially equal parts by weight of propylene and poly 4-methylpentene-1.
Inventors
- 👤 Curtis L. Larson
- 👤 Pierre H. LePere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:49
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/05; A23B2/08; A23B2/30; A23B2/33; B; B65; B65D; B65D77/00; B65D77/22; B65D77/225; B65D81/00; B65D81/24; B65D81/26; B65D81/264; B65D81/34; B65D81/3446; B65D81/3461; B65D2205/00; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3416; B65D2581/3417; B65D75/00; B65D75/52; B65D75/58; B65D75/5855; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24479; Y10T428/24595; Y10T428/24603
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A pad for use with a food containing a substantial amount of water and solidified grease for cooking of the food in a microwave oven with the pad adapted to be placed adjacent the food to be cooked, the pad comprising: a plurality of generally microwave radiation transparent and generally hydrophobic grease absorbing microfibers constructed of a composition comprising a blend containing substantially equal parts by weight of polypropylene and poly 4-methylpentene-1.
Claim 2
Dependent Claim
72 words
A pad for use with a food containing a substantial amount of water and solidified grease for cooking of the food in a microwave oven with the pad adapted to be placed adjacent the food to be cooked, the pad comprising: a plurality of generally microwave radiation transparent and generally hydrophobic grease absorbing microfibers constructed of a composition comprising a blend containing substantially equal parts by weight of polypropylene and poly 4-methylpentene-1.
Claim 3
Dependent Claim
15 words
The pad of claim 1, wherein said microfibers are less than 30 microns in diameter.
Claim 4
Dependent Claim
15 words
The pad of claim 1, wherein said microfibers are less than 10 microns in diameter.
Claim 5
Dependent Claim
78 words
The pad of claim 1, wherein said pad includes first and second major opposing surfaces with said first major surface for placement adjacent the food and further including a second pad comprising generally microwave radiation transparent and generally hydrophobic grease absorbing material, with a major surface of said second pad bonded to said first pad opposite the food, said first and second pads together being capable of absorbing all of the grease exuded by the food during cooking.
Claim 6
Dependent Claim
31 words
The pad of claim 4, wherein said second pad is produced from microfibers constructed of a composition comprising a blend containing substantially equal parts by weight of polypropylene and poly 4-methylpentene-1.
Claim 7
Dependent Claim
16 words
The pad of claim 1 wherein portions of said pad adjacent the food are thermally embossed.
Claim 8
Dependent Claim
14 words
The pad of claim 1, wherein the pad is produced from melt blown microfibers.
References Cited (Backward Citations)
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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) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |