US4913954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable pad for odor prevention in cat litter boxes
Assignee: Colgate Palmolive Co
•
Filing: 1987-10-26
•
Granted: 1990-04-03
•
Expires: 2007-10-26
Abstract
Abstract A disposable pad for odor prevention comprising a fluid impervious backing sheet, a top sheet and a pad sandwiched between the backing sheet and said top sheet, said pad being formed substantially of hydrophobic fibers so as to quickly disperse liquid waste for rapid evaporation.
Inventors
- 👤 Robert J. Mack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:48
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A01; A01K; A01K1/00; A01K1/01; A01K1/0107; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/531; B32B27/00; B32B27/12; B32B27/32; A61F13/51; A61F2013/51059; A61F2013/51066; A61F2013/530131; A61F2013/530226; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0276; B32B2307/00; B32B2307/70; B32B2307/73; B32B2307/758; B32B2555/00; B32B2555/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/678
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A pad for cat litter boxes for facilitating evaporation of liquid waste comprising a fluid impervious backing sheet of material selected from the group consisting of polyethylene and polypropylene film, a top sheet of non-woven hydrophobic fibers selected from the group consisting of polyethylene, polypropylene and polyester, securd to said backing sheet, and a layer of hydrophobic fibers disposed between said top sheet and said backing sheet, the fibers of said layer being selected from the group consisting of polyethylene, polypropylene and polyester.
Claim 2
Dependent Claim
83 words
A pad for cat litter boxes for facilitating evaporation of liquid waste comprising a fluid impervious backing sheet of material selected from the group consisting of polyethylene and polypropylene film, a top sheet of non-woven hydrophobic fibers selected from the group consisting of polyethylene, polypropylene and polyester, securd to said backing sheet, and a layer of hydrophobic fibers disposed between said top sheet and said backing sheet, the fibers of said layer being selected from the group consisting of polyethylene, polypropylene and polyester.
Claim 3
Dependent Claim
23 words
A pad according to claim 1, wherein said layer ranges between two and at least twenty times the thickness of said top sheet.
Claim 4
Dependent Claim
18 words
A pad according to claim 1, wherein said hydrophobic fibers of said layer are coated with a surfactant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |