Patent US4684562A successfully refreshed from Google Patents.
US4684562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mat for absorbing oil and other liquids
Assignee: Individual
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Filing: 1985-03-19
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Granted: 1987-08-04
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Expires: 2005-03-19
Abstract
Abstract The present invention relates to an apparatus designed to catch drippings including three sheets, one formed from an absorbent, isotropically permeable material supported by a second sheet formed from an absorbent material for absorbing drippings. These two sheets further are supported by a third sheet that is liquid-resistant, one side of which is covered by a foil material, this foil-backed sheet further preventing liquid leakage. The three sheets are bonded together by a sealing ring, tape, or adhesive.
Inventors
- 👤 Robert Hartkemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:19
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/002; A; A47; A47G; A47G27/00; A47G27/02; A47G27/0206; B32B15/00; B32B15/04; B32B15/046; B32B27/00; B32B27/06; B32B27/10; B32B5/00; B32B5/18; B32B9/00; B32B9/02; E; E04; E04H; E04H6/00; E04H6/42; E04H6/428; F; F16; F16N; F16N31/00; F16N31/006; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2317/00; B32B2317/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24777; Y10T428/31504; Y10T428/3167; Y10T428/31855; Y10T428/31931; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
118 words
A mat for absorbing oil and other liquids comprising: (a) a first, top sheet for absorbing said oil and other liquid, said top sheet comprising cardboard material; (b) a second, intermediate sheet for absorbing said oil and other liquid, said second sheet being disposed beneath and supporting said top sheet; (c) a liquid resistant bottom sheet, said bottom sheet being disposed beneath said intermediate sheet and supporting said intermediate sheet; and (d) means for securing said top sheet, said intermediate sheet, and said bottom sheet together, wherein said securing means prevents misalignment of said sheets and surrounds the perimeter of said mat defined by the respective edges of said top sheet, said intermediate sheet and said bottom sheet.
Claim 2
Dependent Claim
118 words
A mat for absorbing oil and other liquids comprising: (a) a first, top sheet for absorbing said oil and other liquid, said top sheet comprising cardboard material; (b) a second, intermediate sheet for absorbing said oil and other liquid, said second sheet being disposed beneath and supporting said top sheet; (c) a liquid resistant bottom sheet, said bottom sheet being disposed beneath said intermediate sheet and supporting said intermediate sheet; and (d) means for securing said top sheet, said intermediate sheet, and said bottom sheet together, wherein said securing means prevents misalignment of said sheets and surrounds the perimeter of said mat defined by the respective edges of said top sheet, said intermediate sheet and said bottom sheet.
Claim 3
Dependent Claim
23 words
A mat defined by claim 1 wherein said cardboard top sheet comprises an isotropically, permeable material for absorbing said oil and other liquids.
Claim 4
Dependent Claim
12 words
A mat defined by claim 1 wherein said intermediate sheet comprises cork.
Claim 5
Dependent Claim
22 words
A mat defined by claim 1 wherein said bottom sheet comprises a foam board having a top side and a bottom side.
Claim 6
Dependent Claim
21 words
A mat defined by claim 4 wherein said bottom side of said bottom sheet has attached to it a liquid-resistant material.
Claim 7
Dependent Claim
12 words
A mat defined by claim 5 wherein said liquid-resistant material comprises foil.
Claim 8
Dependent Claim
12 words
A mat defined by claim 4 wherein said foam board comprises polyisocyanurate.
Claim 9
Dependent Claim
26 words
A mat defined by claim 1 wherein said top sheet, said intermediate sheet and said bottom sheet, when aligned together define a perimeter along their edges.
Claim 10
Dependent Claim
25 words
A mat defined by claim 8 wherein said means for securing said sheets comprises a sealing ring elastically positioned about said perimeter of said mat.
Claim 11
Dependent Claim
25 words
A mat defined by claim 9 wherein said sealing ring is made from a material selected from a group consisting of vinyl, rubber, and neopreme.
Claim 12
Dependent Claim
130 words
A mat for absorbing oil and other liquid comprising a first, top sheet comprising cardboard for absorbing said oil and other liquids; a second, intermediate sheet comprising cork for absorbing oil and other liquids; a liquid-resistant, bottom sheet comprising foil-backed polyisocyanurate material, and a means for securing said top sheet, said intermediate sheet, and said bottom sheet together, said sheets, when aligned together, comprising a perimeter at the edges of said sheet, comprising a plastic ring elastically positioned about said perimeter of said mat, said plastic ring made from materials selected from the group consisting of vinyl, rubber, or neopreme, wherein said intermediate sheet is disposed between said top sheet and said bottom sheet, and said bottom sheet supports said intermediate sheet, and said intermediate sheet supports said top sheet.
Claim 13
Dependent Claim
130 words
A mat for absorbing oil and other liquid comprising a first, top sheet comprising cardboard for absorbing said oil and other liquids; a second, intermediate sheet comprising cork for absorbing oil and other liquids; a liquid-resistant, bottom sheet comprising foil-backed polyisocyanurate material, and a means for securing said top sheet, said intermediate sheet, and said bottom sheet together, said sheets, when aligned together, comprising a perimeter at the edges of said sheet, comprising a plastic ring elastically positioned about said perimeter of said mat, said plastic ring made from materials selected from the group consisting of vinyl, rubber, or neopreme, wherein said intermediate sheet is disposed between said top sheet and said bottom sheet, and said bottom sheet supports said intermediate sheet, and said intermediate sheet supports said top sheet.
Claim 14
Dependent Claim
24 words
A mat defined by claim 11 wherein said means for securing said top sheet, said intermediate sheet, and said bottom sheet together comprises tape.
Claim 15
Dependent Claim
132 words
A mat for absorbing oil and other liquids comprising a first, top sheet comprising cardboard for absorbing said oil and other liquids; a second, intermediate sheet for absorbing oil and other liquids; and a liquid-resistant bottom sheet comprising foil-backed plastic material said intermediate sheet and said bottom foil sheet being adhesively attached to each other, and means for attaching said top sheet, said intermediate sheet, and said bottom sheet together, wherein said sheets, when aligned, together define a perimeter about the edges of said sheets, said securing means comprising a plastic ring positioned about said mat perimeter said intermediate sheet being disposed between said top sheet and said bottom sheet, wherein said bottom sheet comprises a support for said intermediate sheet and said intermediate sheet comprises a support for said top sheet.
Claim 16
Dependent Claim
132 words
A mat for absorbing oil and other liquids comprising a first, top sheet comprising cardboard for absorbing said oil and other liquids; a second, intermediate sheet for absorbing oil and other liquids; and a liquid-resistant bottom sheet comprising foil-backed plastic material said intermediate sheet and said bottom foil sheet being adhesively attached to each other, and means for attaching said top sheet, said intermediate sheet, and said bottom sheet together, wherein said sheets, when aligned, together define a perimeter about the edges of said sheets, said securing means comprising a plastic ring positioned about said mat perimeter said intermediate sheet being disposed between said top sheet and said bottom sheet, wherein said bottom sheet comprises a support for said intermediate sheet and said intermediate sheet comprises a support for said top sheet.
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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) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |