Patent US3876491A successfully refreshed from Google Patents.
US3876491A
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US
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Synthetic suede
Assignee: DVSG Holding GmbH
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Filing: 1973-02-08
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Granted: 1975-04-08
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Expires: 1993-02-08
Abstract
Abstract A synthetic suede product formed of a thermoplastic foam adhered to a fibrous substrate, wherein the foam has the surface characteristics of natural suede. The synthetic suede product is formed by removing a surface layer of the foam so as to expose the pore structure thereof.
Inventors
- 👤 George E Martel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:38
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B5/20; D; D06; D06N; D06N3/00; D06N3/007; D06N3/0075; B32B5/22; B32B5/24; B32B5/245; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0235; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T156/00; Y10T156/11; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/24; Y10T428/24355; Y10T428/24438; Y10T428/249921; Y10T428/249953
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
IN THE METHOD OF PRODUCING SYNTHETIC SUEDE HAVING THE APPEARANCE OF NATURAL SUEDE BY COATING A SUBSTRATE WITH A FOAMABLE THERMOPLASTIC RESIN AND HEATING SAID RESIN TO GENERATE A FOAM HAVING A GENERALLY SMOOTH AND REFLECTIVE OUTER SURFACE LAYER, THE IMPROVEMENT WHICH COMPRISES THEREAFTER REMOVING SAID OUTER SURFACE LAYER BY COMPRESSIVELY CONTACTING THE SAME WITH A SMOOTH SURFACE HEATED APPROXIMATELY THE MELT TEMPERATURE OF THE THERMOPLASTIC RESIN TO SOFTEN THE OUTER SURFACE PORTION OF THE FOAM AND REMOVING SAID OUTER SURFACE LAYER BY DISENGAGING THE CONTACTING HEATED SURFACE THEREBY EXPOSING THE UNDERLYING PORE STRUCTURE OF THE FOAM GENERATED DURING FOAM FORMATION.
Claim 2
Dependent Claim
101 words
IN THE METHOD OF PRODUCING SYNTHETIC SUEDE HAVING THE APPEARANCE OF NATURAL SUEDE BY COATING A SUBSTRATE WITH A FOAMABLE THERMOPLASTIC RESIN AND HEATING SAID RESIN TO GENERATE A FOAM HAVING A GENERALLY SMOOTH AND REFLECTIVE OUTER SURFACE LAYER, THE IMPROVEMENT WHICH COMPRISES THEREAFTER REMOVING SAID OUTER SURFACE LAYER BY COMPRESSIVELY CONTACTING THE SAME WITH A SMOOTH SURFACE HEATED APPROXIMATELY THE MELT TEMPERATURE OF THE THERMOPLASTIC RESIN TO SOFTEN THE OUTER SURFACE PORTION OF THE FOAM AND REMOVING SAID OUTER SURFACE LAYER BY DISENGAGING THE CONTACTING HEATED SURFACE THEREBY EXPOSING THE UNDERLYING PORE STRUCTURE OF THE FOAM GENERATED DURING FOAM FORMATION.
Claim 3
Dependent Claim
28 words
In the method of producing a synthetic suede as set forth in claim 1 wherein said heated surface is in the form of a heated roll against which
Claim 4
Dependent Claim
10 words
SYNTHETIC SUEDE PRODUCED BY THE METHOD RECITED IN CLAIM 1.
References Cited (Backward Citations)
US3284274A
Cited
US3600260A
Cited
US3399425A
Cited
US3443007A
Cited
US3524791A
Cited
US3660218A
Cited
US3696183A
Cited
US3719549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |