US4961930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pet pad of thermoplastic containing materials with insecticide
Assignee: Weyerhaeuser Co
•
Filing: 1988-04-29
•
Granted: 1990-10-09
•
Expires: 2008-04-29
Abstract
Abstract Pet pads contain insecticide and have at least one layer comprising a mixture of thermoplastic and other fibers. This latter layer may be thermobonded together and then densified along at least a section of the eventual peripheral edge margin of a pet pad to be formed from the material. By including insecticide in the mixture prior to thermobonding, the insecticide is fixed in the pad during thermobonding. Thermoplastic material-containing cover sheets may also be secured to the core and densified along the periphery of the pad. The entire eventual peripheral edge margin of the pet pad is typically densified. The densified edge acts as a partial liquid barrier and also helps retain the insecticide in the pad, especially if the insecticide is not fixed by thermobonding.
Inventors
- 👤 Jr. Lee E. Perdelwitz
- 👤 Robert H. Young
- 👤 Earl D. Hasenwinkle
- 👤 Ron H. Iff
- 👤 Amar H. Neogi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:09
CPC Classifications
A; A01; A01M; A01M1/00; A01M1/20; A01M1/2022; A01M1/2027; A01M1/2044; A01K; A01K1/00; A01K1/02; A01K1/035; A01K1/0353; A01N; A01N25/00; A01N25/34; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
34 words
A pet pad having a body with a field bounded by a peripheral edge margin and a peripheral edge, the body comprising a thermobonded mixture of thermoplastic containing fibers, other fibers and an insecticide.
Claim 2
Dependent Claim
34 words
A pet pad having a body with a field bounded by a peripheral edge margin and a peripheral edge, the body comprising a thermobonded mixture of thermoplastic containing fibers, other fibers and an insecticide.
Claim 3
Dependent Claim
14 words
A pet pad according to claim 1 in which the insecticide comprises flea powder.
Claim 4
Dependent Claim
26 words
A pet pad according to claim 1 which is densified at the peripheral edge margin and at field bond locations within the field of the body.
Claim 5
Dependent Claim
60 words
A pet pad having a body with a field bounded by a peripheral edge margin and a peripheral edge, the body comprising a thermobonded mixture of thermoplastic containing fibers, other fibers and an insecticide the mixture comprising a core and in which the body has a liquid permeable facing sheet and a liquid impermeable backing sheet mounted to the core.
Claim 6
Dependent Claim
60 words
A pet pad having a body with a field bounded by a peripheral edge margin and a peripheral edge, the body comprising a thermobonded mixture of thermoplastic containing fibers, other fibers and an insecticide the mixture comprising a core and in which the body has a liquid permeable facing sheet and a liquid impermeable backing sheet mounted to the core.
Claim 7
Dependent Claim
39 words
A pet pad according to claim 4 in which the facing sheet is of thermoplastic containing materials compressed and bonded to the core at the peripheral edge margin and at field bond locations within the field of the core.
Claim 8
Dependent Claim
42 words
A pet pad according to claim 5 in which the backing sheet is of a thermoplastic containing material which is compressed and bonded to the core of the peripheral edge margin and at field bond locations within the field of the core.
Claim 9
Dependent Claim
45 words
A pet pad comprised of a body having a field bounded by a peripheral edge margin and a peripheral edge, the body having a core of thermoplastic containing fibers and other fibers, a facing sheet and a backing sheet, the body also including an insecticide.
Claim 10
Dependent Claim
45 words
A pet pad comprised of a body having a field bounded by a peripheral edge margin and a peripheral edge, the body having a core of thermoplastic containing fibers and other fibers, a facing sheet and a backing sheet, the body also including an insecticide.
Claim 11
Dependent Claim
17 words
A pet pad according to claim 7 which is densified and bonded at the peripheral edge margin.
Claim 12
Dependent Claim
23 words
A pet pad according to claim 8 which is densified and bonded at field bond locations within the field of the pet pad.
Claim 13
Dependent Claim
23 words
A pet pad according to claim 7 which is densified and bonded at field bond locations within the field of the pet pad.
Claim 14
Dependent Claim
20 words
A pet pad according to claim 9 which has a liquid permeable facing sheet and a liquid impermeable backing sheet.
Claim 15
Dependent Claim
79 words
A pet pad having a body with a field bounded by a peripheral edge margin and peripheral edge, the pet pad comprising a core of a thermobonded mixture of thermoplastic containing fibers, wood pulp fibers and an insecticide, a facing sheet secured to the core and a liquid impermeable backing sheet secured to the core, the core being densified at the peripheral edge margin of the pet pad and at field bond locations within the field of the pad.
Claim 16
Dependent Claim
79 words
A pet pad having a body with a field bounded by a peripheral edge margin and peripheral edge, the pet pad comprising a core of a thermobonded mixture of thermoplastic containing fibers, wood pulp fibers and an insecticide, a facing sheet secured to the core and a liquid impermeable backing sheet secured to the core, the core being densified at the peripheral edge margin of the pet pad and at field bond locations within the field of the pad.
Claim 17
Dependent Claim
34 words
A pet pad according to claim 12 in which the backing sheet is of a thermoplastic containing material thermobonded to the core at the densified peripheral edge margin and at the field bond locations.
Claim 18
Dependent Claim
47 words
A pet pad according to claim 12 in which the facing sheet is of a thermoplastic containing material which is thermobonded to the core at every point of contact with the core and which is densified at the peripheral edge margin and at the field bond locations.
Claim 19
Dependent Claim
34 words
A pet pad according to claim 14 in which the backing sheet is of a thermoplastic containing material thermobonded to the core at the densified peripheral edge margin and at the field bond locations.
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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) | 1993-10-08 | 1994-04-09 | 1994-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-08 | 1998-04-09 | 1998-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-08 | 2002-04-09 | 2002-10-09 | $7700.00 | Window Closed / Lapsed |