US4678700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous composite materials
Assignee: Imperial Chemical Industries Ltd
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Filing: 1985-05-28
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Granted: 1987-07-07
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Expires: 2005-05-28
Abstract
Abstract A fibrous composite material comprising carbon fibres and chemically delaminated vermiculite lamellae and production of the material by applying a suspension (preferably an aqueous suspension) of the lamellae to carbon fibres and removing the liquid medium from the suspension. The composite material is useful for the insulation and fire-protection of substrates.
Inventors
- 👤 Kevin T. McAloon
- 👤 Allan T. Brew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:51
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/18; C; C04; C04B; C04B30/00; C04B30/02; D21H13/00; D21H13/36; D21H13/46; D21H13/50; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249956; Y10T428/25; Y10T428/251; Y10T428/29; Y10T428/2904; Y10T428/2905; Y10T428/2913; Y10T428/2918; Y10T428/30; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31678; Y10T428/31855; Y10T428/31971; Y10T428/31989; Y10T428/31993; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2049; Y10T442/2057; Y10T442/2074; Y10T442/2631; Y10T442/2926; Y10T442/2984
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
27 words
A fibrous composite material consisting essentially of carbon fibres and lamellae of chemically delaminated vermiculite wherein the fibres comprise at least 10% by weight of the composite.
Claim 2
Dependent Claim
27 words
A fibrous composite material consisting essentially of carbon fibres and lamellae of chemically delaminated vermiculite wherein the fibres comprise at least 10% by weight of the composite.
Claim 3
Dependent Claim
19 words
A fibrous composite material as claimed in claim 1 comprising at least 20% by weight of the carbon fibres.
Claim 4
Dependent Claim
19 words
A fibrous composite material as claimed in claim 1 comprising at least 20% by weight of the vermiculite lamellae.
Claim 5
Dependent Claim
24 words
A material as claimed in claim 1 wherein the loading of the vermiculite lamellae is up to 100% by weight based on the fibres.
Claim 6
Dependent Claim
20 words
A material as claimed in claim wherein the vermiculite lamellae are substantially all of the maximum dimension below 50 microns.
Claim 7
Dependent Claim
14 words
A material as claimed in claim 1 wherein the fibrous material comprises individual fibres.
Claim 8
Dependent Claim
20 words
A material as claimed in claim wherein the fibres are present in the form of a layer of fibrous material.
Claim 9
Dependent Claim
28 words
A material as claimed in claim 1 in the form of a block of randomly oriented fibres bonded together at their points of contact by the vermiculite lamellae.
Claim 10
Dependent Claim
18 words
A fibre-reinforced polymeric material as claimed in claim 1 wherein the fibre reinforcement is a fibrous composite material.
Claim 11
Dependent Claim
13 words
A material as claimed in claim 1 which additionally comprises a water-stability improver.
Claim 12
Dependent Claim
20 words
A material as claimed in claim 1 wherein the vermiculite is present in the form of a dry, rigid foam.
Claim 13
Dependent Claim
47 words
An article of manufacture protected from damage by heat or flame comprising a flammable and/or low-melting substrate and a fibrous composite material comprising carbon fibers and lamellae of chemically delaminated vermiculite wherein said fibrous composite material is provided as a loose covering not bonded to said substrate.
Claim 14
Dependent Claim
47 words
An article of manufacture protected from damage by heat or flame comprising a flammable and/or low-melting substrate and a fibrous composite material comprising carbon fibers and lamellae of chemically delaminated vermiculite wherein said fibrous composite material is provided as a loose covering not bonded to said substrate.
Claim 15
Dependent Claim
44 words
An article of manufacture protected from damage by heat or flame comprising a flammable and/or low-melting substrate and a fibrous composite material comprising carbon fibers and lamellae of chimically delaminated vermiculite wherein said fibrous composite material is bonded to and laminated with said substrate.
Claim 16
Dependent Claim
44 words
An article of manufacture protected from damage by heat or flame comprising a flammable and/or low-melting substrate and a fibrous composite material comprising carbon fibers and lamellae of chimically delaminated vermiculite wherein said fibrous composite material is bonded to and laminated with said substrate.
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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) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |