Patent US4472478A successfully refreshed from Google Patents.
US4472478A
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US
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Fibrous composite materials and the production and use thereof
Assignee: Imperial Chemical Industries Ltd
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Filing: 1983-10-24
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Granted: 1984-09-18
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Expires: 2003-10-24
Abstract
Abstract A fibrous composite material of essentially two-dimensional form in the form of individual fibres, sheets or layers comprising combustible fibres and lamellae of a layer mineral of size below 50 microns, a method for the manufacture of the fibrous composite materials by applying lamellae of a layer mineral to the fibres preferably from suspension followed by removal of the liquid phase of the suspension, and use of the fibrous composite materials for the fire-protection of substrates.
Inventors
- 👤 Peter J. Briggs
- 👤 Kevin McAloon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:25
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B18/00; C04B18/04; C04B18/18; C04B18/24; C04B18/28; C04B26/00; C04B26/02; C04B30/00; C04B30/02; D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; D21H13/44; D21H27/00; D21H27/30; D21H5/00; D21H5/12; D21H5/18; B; B27; B27N; B27N3/00; B27N3/04; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/25; Y10T428/251; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2958; Y10T428/2964; Y10T428/298; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/223; Y10T442/25; Y10T442/2615; Y10T442/2623; Y10T442/2762; Y10T442/277; Y10T442/30; Y10T442/3049; Y10T442/40; Y10T442/419; Y10T442/50; Y10T442/60; Y10T442/603; Y10T442/604; Y10T442/637
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
51 words
A fibrous composite material consisting essentially of at least 15% by weight non-combustible fibers, and at least 20% by weight lamallae of chemically delaminated vermiculite, the lamallae having a thickness of less than 0.5 micron and an aspect ratio of at least 10, the fibers being bonded together by the vermiculite.
Claim 2
Dependent Claim
51 words
A fibrous composite material consisting essentially of at least 15% by weight non-combustible fibers, and at least 20% by weight lamallae of chemically delaminated vermiculite, the lamallae having a thickness of less than 0.5 micron and an aspect ratio of at least 10, the fibers being bonded together by the vermiculite.
Claim 3
Dependent Claim
23 words
A fibrous composite material as claimed in claim 1 wherein said fibres are present in the amount of at least 20% by weight.
Claim 4
Dependent Claim
13 words
A material as claimed in claim 1 wherein the fibres are glass fibres.
Claim 5
Dependent Claim
24 words
A material as claimed in claim 1 wherein the loading of the layer mineral is up to 100% by weight based on the fibres.
Claim 6
Dependent Claim
20 words
A material as claimed in claim 1 wherein the vermiculite lamellae are substantially all of maximum dimension below 50 microns.
Claim 7
Dependent Claim
21 words
A material as claimed in claim 1 wherein the fibres are present in the form of a layer of fibrous material.
Claim 8
Dependent Claim
27 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.
Claim 9
Dependent Claim
15 words
A material as claimed in claim 7 wherein the fibres are coated with said vermiculite.
Claim 10
Dependent Claim
13 words
A material as claimed in claim 1 which additionally contains a water-stability improver.
Claim 11
Dependent Claim
15 words
A material as claimed in claim 9 wherein the water stability improver is magnesium oxide.
Claim 12
Dependent Claim
22 words
A material as claimed in claim 1 wherein the chemically delaminated vermiculite is present in the form of a dry, rigid foam.
Claim 13
Dependent Claim
18 words
A material as claimed in claim 1 in which the vermiculite lamallae thickness is less than 0.05 micron.
Claim 14
Dependent Claim
18 words
A material as claimed in claim 12 in which the vermiculite lamallae thickness is less than 0.005 micron.
Claim 15
Dependent Claim
20 words
A material as claimed in claim 1 in which the vermiculite lamallae have an aspect ratio of at least 100.
Claim 16
Dependent Claim
20 words
A material as claimed in claim 14 in which the vermiculite lamallae have an aspect ratio of at least 1000.
Claim 17
Dependent Claim
27 words
A material as claimed in claim 1 in which the vermiculite lamallae are less than 0.005 micron thick and have an aspect ratio of at least 1000.
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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) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |