US4923725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article for absorbing cooking grease
Assignee: EIDP Inc
•
Filing: 1988-07-29
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Granted: 1990-05-08
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Expires: 2008-07-29
Abstract
Abstract A disposable article, suitable for absorbing and immobilizing grease generated during cooking, has a housing containing an absorbent bed of particles and polyolefin microfibers.
Inventors
- 👤 Dimitri P. Zafiroglu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D39/1638; B01D39/1653; F; F24; F24C; F24C15/00; F24C15/14; F24C15/20; F24C15/2035; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10S428/913; Y10S55/00; Y10S55/36; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1372; Y10T428/1376
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
148 words
A cooking-grease trapping-and-immobilizing disposable article comprising a multi-layered bed of absorbent material in a container, said absorbent material consisting essentially of particles and polyolefin microfibers, the microfibers amounting to at least 30% of the bed volume, said container having an inlet through which the grease can enter and come into contact with the surface of the first layer of the absorbent material, said first layer being located closest to the container inlet, consisting essentially of particles, and having a depth equal to at least one-quarter of the total depth of the bed, a free volume of at least 50%, and a multiplicity of passages therethrough, and at least 25% of the first layer total cross-sectional area consisting of passages having a width of at least 2 millimeters, said microfibers being included in a second or subsequent layer of the bed having a free volume of at least 80%.
Claim 2
Dependent Claim
148 words
A cooking-grease trapping-and-immobilizing disposable article comprising a multi-layered bed of absorbent material in a container, said absorbent material consisting essentially of particles and polyolefin microfibers, the microfibers amounting to at least 30% of the bed volume, said container having an inlet through which the grease can enter and come into contact with the surface of the first layer of the absorbent material, said first layer being located closest to the container inlet, consisting essentially of particles, and having a depth equal to at least one-quarter of the total depth of the bed, a free volume of at least 50%, and a multiplicity of passages therethrough, and at least 25% of the first layer total cross-sectional area consisting of passages having a width of at least 2 millimeters, said microfibers being included in a second or subsequent layer of the bed having a free volume of at least 80%.
Claim 3
Dependent Claim
20 words
An article in accordance with claim 1 wherein the microfibers amount to no more than 65% of the bed volume.
Claim 4
Dependent Claim
24 words
An article in accordance with claim 2 wherein the second or subsequent layer containing the microfibers has a free volume of at least 85%.
Claim 5
Dependent Claim
29 words
An article in accordance with claim 1 wherein the bed has a total depth in the range of 1 centimeter to 1 meter and the particles are of polyolefin.
Claim 6
Dependent Claim
29 words
An article in accordance with claim 4 wherein the polyolefin particles consist essentially of polypropylene microfoam and the polyolefin microfibers consist essentially of melt-blown polypropylene or of flash-spun polyethylene.
Claim 7
Dependent Claim
49 words
An article in accordance with any preceding claim wherein the first layer consists essentially of said particles and a last layer, located farthest from said container inlet consists essentially of the microfibers and the total depth of the bed is in the range of 10 centimeters to 1 meter.
Claim 8
Dependent Claim
101 words
A cooking-grease trapping-and-immobilizing disposable article comprising a bed of absorbent material in a container, said absorbent material being a substantially homogeneous mixture consisting essentially of particles and polyolefin microfibers, the microfibers amounting to at least 30% of the bed volume, said container having an inlet through which the grease can enter and come into contact with the surface of the absorbent material, said bed having a free volume of at least 80%, and a multiplicity of passages therethrough, at least 25% of the total cross-sectional area of the bed consisting essentially of passages having a width of at least 2 millimeters.
Claim 9
Dependent Claim
101 words
A cooking-grease trapping-and-immobilizing disposable article comprising a bed of absorbent material in a container, said absorbent material being a substantially homogeneous mixture consisting essentially of particles and polyolefin microfibers, the microfibers amounting to at least 30% of the bed volume, said container having an inlet through which the grease can enter and come into contact with the surface of the absorbent material, said bed having a free volume of at least 80%, and a multiplicity of passages therethrough, at least 25% of the total cross-sectional area of the bed consisting essentially of passages having a width of at least 2 millimeters.
Claim 10
Dependent Claim
32 words
An article in accordance with claim 7 wherein the bed has a total depth in the range depth in the range of 1 centimeter to 1 meter, the particles are of polyolefin.
Claim 11
Dependent Claim
29 words
An article in accordance with claim 8 wherein the polyolefin particles consist essentially of polypropylene microfoam and the polyolefin microfibers consist essentially of melt-blown polypropylene or of flash-spun polyethylene.
Claim 12
Dependent Claim
58 words
An article in accordance with any one of claims 7 through 9 wherein the surface of the bed nearest the inlet is covered by an open-mesh member having an open area of at least 50% and the bed is in the shape of a flat planar member having a thickness in the range of 2 to 5 cm.
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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) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |