US4581261A
Expired / Lapsed
US
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Dressed split leather
Assignee: Microplastic Rop
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Filing: 1984-02-06
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Granted: 1986-04-08
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Expires: 2004-02-06
Abstract
Abstract A dressed leather comprises a split leather having one side from which fibers protrude, a first layer of a solidified aqueous dispersion having a thickness between 0.07 mm and 0.22 mm of a synthetic plastics material in which the fibers are completely immersed on the one side, a second layer of a synthetic plastics material of generally the same thickness as the first layer bonded to the first layer and having turned away therefrom a textured surface, and a finish layer overlying the textured surface of the second layer. The split leather is substantially free of the dispersion except at the fibers.
Inventors
- 👤 Helmut Schaefer
- 👤 Philipp Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:17
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0078; B29C37/0082; B32; B32B; B32B9/00; B32B9/02; B32B9/025; B29C43/00; B29C43/02; B29C43/021; B29C43/10; B29C43/12; B29C43/18; B29C43/20; B29C43/32; B29C43/36; B29C43/3642; B29C70/00; B29C70/68; B29C70/78; B32B5/00; B32B5/18; B32B9/04; B32B9/045; C; C14; C14B; C14B7/00; C14B7/02; D; D06; D06N; D06N3/00; D06N3/007; D06N3/0079; D06N3/04; D06N3/10; D06N3/12; D06N3/14; B29C2043/3647; B29C2791/00; B29C2791/001; B29K; B29K2105/00; B29K2105/0058; B29K2105/0064; B29K2105/06; B29K2105/16; B29K2105/165; B29K2711/00; B29K2711/08; B32B2317/00; B32B2317/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24438; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249958; Y10T428/25; Y10T428/26; Y10T428/31504; Y10T428/31551; Y10T428/31558; Y10T428/31855; Y10T428/31931; Y10T428/31935; Y10T428/4935
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
102 words
A dressed leather comprising: a split leather having one side from which fibers protrude; a first layer of a solidified aqueous dispersion having a thickness between 0.07 mm and 0.22 mm of a synthetic plastics material in which the fibers are completely immersed on the one side, the split leather being substantially free of the dispersion except at the fibers; a second layer of a synthetic plastics material of generally the same thickness as the first layer bonded to the first layer and having turned away therefrom a textured surface; and a finish layer overlying the textured surface of the second layer.
Claim 2
Dependent Claim
102 words
A dressed leather comprising: a split leather having one side from which fibers protrude; a first layer of a solidified aqueous dispersion having a thickness between 0.07 mm and 0.22 mm of a synthetic plastics material in which the fibers are completely immersed on the one side, the split leather being substantially free of the dispersion except at the fibers; a second layer of a synthetic plastics material of generally the same thickness as the first layer bonded to the first layer and having turned away therefrom a textured surface; and a finish layer overlying the textured surface of the second layer.
Claim 3
Dependent Claim
16 words
The dressed leather defined in claim 1 wherein the finish layer is a solidified polymer solution.
Claim 4
Dependent Claim
17 words
The dressed leather defined in claim 1 wherein the finish layer is a solidified polyurethane polymer solution.
Claim 5
Dependent Claim
15 words
The dressed leather defined in claim 1 wherein the textured surface is a grain structure.
Claim 6
Dependent Claim
15 words
The dressed leather defined in claim 1 wherein the textured surface is a velour structure.
Claim 7
Dependent Claim
16 words
The dressed leather defined in claim 1 wherein at least one of the dispersions includes polyurethane.
Claim 8
Dependent Claim
16 words
The dressed leather defined in claim 1 wherein at least one of the dispersions includes polybutadiene.
Claim 9
Dependent Claim
16 words
The dressed leather defined in claim 1 wherein at least one of the dispersions includes polyacrylate.
Claim 10
Dependent Claim
16 words
The dressed leather defined in claim 1 wherein at least one of the dispersions includes polyacrylonitrile.
Claim 11
Dependent Claim
22 words
The dressed leather defined in claim 1 wherein at least one of the dispersions includes a vinylacetate-ethylene copolymer or an ethylene-vinylacetate copolymer.
Claim 12
Dependent Claim
19 words
The dressed leather defined in claim 1 wherein wherein at least one of the layers has a foam structure.
Claim 13
Dependent Claim
35 words
The dressed leather defined in claim 1 wherein at least one of the layers contains more than 8% by weight of hollow microspheres containing a gas and having shells formed of a vinylidene chloride copolymer.
Claim 14
Dependent Claim
93 words
A dressed leather comprising: a split leather having one side from which fibers protrude; a first layer of a solidified aqueous dispersion of a synthetic plastics material in which the fibers are completely immersed on the one side, the split leather being substantially free of the dispersion except at the fibers; a second layer of a synthetic plastics material of generally the same thickness as the first layer bonded to the first layer and having turned away therefrom a textured surface; and a finish layer overlying the textured surface of the second layer.
Claim 15
Dependent Claim
93 words
A dressed leather comprising: a split leather having one side from which fibers protrude; a first layer of a solidified aqueous dispersion of a synthetic plastics material in which the fibers are completely immersed on the one side, the split leather being substantially free of the dispersion except at the fibers; a second layer of a synthetic plastics material of generally the same thickness as the first layer bonded to the first layer and having turned away therefrom a textured surface; and a finish layer overlying the textured surface of the second layer.
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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |