Patent US4873101A successfully refreshed from Google Patents.
US4873101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave food package and grease absorbent pad therefor
Assignee: 3M Co
•
Filing: 1987-08-10
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Granted: 1989-10-10
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Expires: 2007-08-10
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 polypropylene and poly 4-methylpentene-1.
Inventors
- 👤 Curtis L. Larson
- 👤 Pierre H. LePere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:25
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: 10
Claim 1
Independent Claim
98 words
A package for use in a microwave oven, said package comprising: (a) food to be cooked by microwave energy containing a substantial amount of water and solidified grease; (b) a pad adjacent said food comprising 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, said pad capable of holding the amount of grease in said food when it is melted by cooking said food; and (c) a vapor tight microwave radiation transparent enclosure surrounding said pad and said food.
Claim 2
Dependent Claim
98 words
A package for use in a microwave oven, said package comprising: (a) food to be cooked by microwave energy containing a substantial amount of water and solidified grease; (b) a pad adjacent said food comprising 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, said pad capable of holding the amount of grease in said food when it is melted by cooking said food; and (c) a vapor tight microwave radiation transparent enclosure surrounding said pad and said food.
Claim 3
Dependent Claim
24 words
The package of claim 1, further including means for venting said enclosure to afford cooking said food within said enclosure in the microwave oven.
Claim 4
Dependent Claim
22 words
The package of claim 1, further including means for affording easy manual opening of said enclosure to facilitate removal of said food.
Claim 5
Dependent Claim
15 words
The package of claim 1, wherein said microfibers are less than 30 microns in diameter.
Claim 6
Dependent Claim
15 words
The package of claim 1, wherein said microfibers are less than 10 microns in diameter.
Claim 7
Dependent Claim
16 words
The package of claim 1 wherein portions of said pad adjacent said food are thermally embossed.
Claim 8
Dependent Claim
56 words
The package of claim 1, wherein said pad includes first and second major opposing surfaces with said first major surface adjacent said 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 said food.
Claim 9
Dependent Claim
29 words
The package of claim 7, wherein said second pad comprises microfibers constructed of a composition comprising a blend containing substantially equal parts by weight of polypropylene and poly 4-methylpentene-1.
Claim 10
Dependent Claim
12 words
The package of claim 1, wherein said pad comprises melt blown microfibers.
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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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |