US4751116A
Expired / Lapsed
US
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Imitation dressed split leather
Assignee: Microplastic Rop
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Filing: 1985-11-21
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Granted: 1988-06-14
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Expires: 2005-11-21
Abstract
Abstract A dressed leather is provided which comprises a split leather having one side from which fibers protrude, a first layer of 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, and a second layer of a synthetic plastics material of generally the same thickness of the first layer bonded to the first layer and having turned away therefrom a textured or non-textured surface. Additionally, there may be a finish layer overlying the textured or non-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
2026-11-06 20:05
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: 20
Claim 1
Independent Claim
110 words
A material having the appearance of dressed leather, the material comprising: a substrate having a split leatherlike structure with one side from which fibers protrude; a first layer of a solidified aqueous polyurethane-containing 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 without projecting through the first layer, the substrate being substantially free of the dispersion except at the fibers; and a second layer of a solified polyurethane-containing solution or dispersion of generally the same thickness as the first layer bonded to the first layer and having turned away therefrom a textured surface.
Claim 2
Dependent Claim
110 words
A material having the appearance of dressed leather, the material comprising: a substrate having a split leatherlike structure with one side from which fibers protrude; a first layer of a solidified aqueous polyurethane-containing 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 without projecting through the first layer, the substrate being substantially free of the dispersion except at the fibers; and a second layer of a solified polyurethane-containing solution or dispersion of generally the same thickness as the first layer bonded to the first layer and having turned away therefrom a textured surface.
Claim 3
Dependent Claim
21 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes polyurethane.
Claim 4
Dependent Claim
21 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes polybutadiene.
Claim 5
Dependent Claim
21 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes polyacrylonitrile.
Claim 6
Dependent Claim
27 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes a vinylacetate-ethylene copolymer or an ethylene-vinylacetate copolymer.
Claim 7
Dependent Claim
23 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the layers has a foam structure.
Claim 8
Dependent Claim
39 words
The material having the appearance of dressed leather 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 9
Dependent Claim
20 words
The material having the appearance of dressed leather defined in claim 1 wherein the textured surface is a grain structure.
Claim 10
Dependent Claim
20 words
The material having the appearance of dressed leather defined in claim 1 wherein the textured surface is a velour structure.
Claim 11
Dependent Claim
21 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes polybutadiene.
Claim 12
Dependent Claim
21 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes polyacrylate.
Claim 13
Dependent Claim
21 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes polyacrylonitrile.
Claim 14
Dependent Claim
27 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the dispersions includes a vinylacetate-ethylene copolymer or an ethylene-vinylacetate copolymer.
Claim 15
Dependent Claim
24 words
The material having the appearance of dressed leather defined in claim 1 wherein wherein at least one of the layers has a foam structure.
Claim 16
Dependent Claim
40 words
The material having the appearance of dressed leather defined in claim 1 wherein at least one of the layers contains more than 8% by volume of hollow microspheres containing a gas and having shells formed of a vinylidene chloride copolymer.
Claim 17
Dependent Claim
21 words
The material having the appearance of dressed leather defined in claim 1 wherein the first and second layers are generally nonthermoplastic.
Claim 18
Dependent Claim
20 words
The material having the appearance of dressed leather defined in claim 1 wherein the second layer is a solidified dispersion.
Claim 19
Dependent Claim
18 words
The material defined in claim 1 wherein a finish layer overlies the textured surface of the second layer.
Claim 20
Dependent Claim
19 words
The material defined in claim 1, further comprising a finish layer overlying the textured surface of the second layer.
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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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |