Patent US4906516A successfully refreshed from Google Patents.
US4906516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather-like foam sheet for vacuum forming
Assignee: Sunstar Giken KK
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Filing: 1989-03-23
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Granted: 1990-03-06
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Expires: 2009-03-23
Abstract
Abstract A leather-like foam sheet for vacuum forming, which comprises: (1) a transparent of semitransparent colored polyurethane elastomer film layer, (2) a colored polyurethane elastomer film layer, (3) a polyurethane adhesive layer, (4) a thermoplastic resin foam layer (optional), (5) a thermoplastic resin sheet layer, and (6) a thermoplastic resin foam layer. The foam sheet of the present invention has excellent resistance and forming properties and a high-grade leather-like appearance and a soft feeling to the touch similar to those of natural leather and is useful for a trim material of a car and for furniture and other miscellaneous goods having leather-like appearance, touch, and other properties.
Inventors
- 👤 Chikaaki Okamura
- 👤 Tamotu Nagao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:44
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B27/00; B32B27/06; B32B27/065; B32B27/08; B32B27/30; B32B27/304; B32B27/40; B32B5/18; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0235; B32B2305/00; B32B2305/02; B32B2305/022; B32B2307/00; B32B2307/40; B32B2307/402; B32B2307/412; B32B2307/414; B32B2327/00; B32B2327/06; B32B2375/00; B32B2605/00; B32B2605/003; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/249988; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
44 words
A leather-like foam sheet for vacuum forming which comprises: (1) a transparent or semitransparent colored polyurethane elastomer film layer, (2) a colored polyurethane elastomer film layer, (3) a polyurethane adhesive layer, (4) a thermoplastic resin sheet layer, and (5) a thermoplastic resin foam layer.
Claim 2
Dependent Claim
44 words
A leather-like foam sheet for vacuum forming which comprises: (1) a transparent or semitransparent colored polyurethane elastomer film layer, (2) a colored polyurethane elastomer film layer, (3) a polyurethane adhesive layer, (4) a thermoplastic resin sheet layer, and (5) a thermoplastic resin foam layer.
Claim 3
Dependent Claim
39 words
The foam sheet of claim 1 wherein each layer has a thickness of (1): 3° to 20 μm, (2): 20 to 100 μm, (3): 30 to 100 μm, (4): 30 to 700 μm, and (5): 1 to 4 mm.
Claim 4
Dependent Claim
35 words
The foam sheet of claim 1 wherein the thermoplastic resin sheet layer (4) is made of a flexible polyvinyl chloride sheet and the thermoplastic resin foam layer (5) is made of a polyvinyl chloride foam.
Claim 5
Dependent Claim
50 words
A leather-like foam sheet for vacuum forming which comprises: (1) a tranparent of semitransparent colored polyurethane elastomer film layer, (2) a colored polyurethane elastomer film layer, (3) a polyurethane adhesive layer, (4) a thermoplastic resin foam layer, (5) a thermoplastic resin sheet layer, and (6) a thermoplastic resin foam layer.
Claim 6
Dependent Claim
50 words
A leather-like foam sheet for vacuum forming which comprises: (1) a tranparent of semitransparent colored polyurethane elastomer film layer, (2) a colored polyurethane elastomer film layer, (3) a polyurethane adhesive layer, (4) a thermoplastic resin foam layer, (5) a thermoplastic resin sheet layer, and (6) a thermoplastic resin foam layer.
Claim 7
Dependent Claim
44 words
The foam sheet of claim 4 wherein each layer has a thickness of (1): 3 to 20 μm, (2): 20 to 100 μm, (3): 30 to 100 μm, (4): 0.2 to 1.5 mm, (5): 0.3 to 1 mm, and (6): 0.5 to 4 mm.
Claim 8
Dependent Claim
35 words
The foam sheet of claim 4 wherein the thermoplastic foam layers (4) and (6) are made of polyvinyl chloride foam and the thermoplastic resin sheet layer (5) is made of a flexible polyvinyl chloride sheet.
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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |