US4772510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric for protective garments
Assignee: EIDP Inc
•
Filing: 1987-10-02
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Granted: 1988-09-20
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Expires: 2007-10-02
Abstract
Abstract A composite fabric that is particularly useful in protective garments has an outer layer of polyvinyl fluoride or polyvinylidene fluoride or copolymers thereof bonded to a film of polyvinyl alcohol polymer or copolymers thereof which in turn is bonded to a textile fabric substrate.
Inventors
- 👤 George R. McClure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B27/06; B32B27/08; B32B27/30; B32B27/306; B32B27/32; B32B27/322; B32B33/00; B32B5/00; B32B5/02; B32B5/022; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2327/00; B32B2327/12; B32B2327/18; B32B2329/00; B32B2329/04; B32B2437/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/66; Y10T442/668; Y10T442/681
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
An improved composite fabric, particularly suited for use in a protective garment, which includes a polymeric film layer bonded to a textile fabric substrate, the improvement comprising a first polymeric film selected from the group consisting of polyvinyl fluoride, polyvinylidene fluoride and copolymers thereof, bonded to a second polymeric film selected from the group consisting of polymers and copolymers of polyvinyl alcohol, the second film being bonded to a textile fabric substrate.
Claim 2
Dependent Claim
72 words
An improved composite fabric, particularly suited for use in a protective garment, which includes a polymeric film layer bonded to a textile fabric substrate, the improvement comprising a first polymeric film selected from the group consisting of polyvinyl fluoride, polyvinylidene fluoride and copolymers thereof, bonded to a second polymeric film selected from the group consisting of polymers and copolymers of polyvinyl alcohol, the second film being bonded to a textile fabric substrate.
Claim 3
Dependent Claim
15 words
A composite fabric of claim 1 wherein the textile fabric substrate is a nonwoven fabric.
Claim 4
Dependent Claim
21 words
A composite fabric of claim 1 wherein the textile fabric substrate is a spunbonded nonwoven sheet of polyethylene plexifilamentary film-fibril strands.
Claim 5
Dependent Claim
35 words
A composite film of claim 1, 2 or 3 wherein the second surface of the textile fabric substrate is bonded to a third polymeric film selected from the same group as the first polymeric film.
Claim 6
Dependent Claim
33 words
A composite film of claim 5 wherein a fourth polymeric film selected from the same group as the second polymeric film is positioned between the third polymeric film and the textile fabric subtrate.
Claim 7
Dependent Claim
32 words
A composite fabric of claim 1, 2 or 3 wherein an adhesive bonding layer is positioned between the first and second films and between the second film and the textile fabric substrate.
Claim 8
Dependent Claim
41 words
A protective garment made from a composite fabric of claim 1 wherein the textile fabric substrate forms the inside surface of the garment and the film of polyvinyl fluoride, polyvinylidene fluoride or copolymers thereof forms the outside surface of the garment.
References Cited (Backward Citations)
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US4469744A
Cited
US4416946A
Cited
US4433024A
Cited
US4585694A
Cited
US4659625A
Cited
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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) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |