Patent US4532176A successfully refreshed from Google Patents.
US4532176A
Expired / Lapsed
US
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Fibrous material comprised of vermiculite coated fibers
Assignee: Imperial Chemical Industries Ltd
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Filing: 1984-01-17
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Granted: 1985-07-30
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Expires: 2004-01-17
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
2026-10-28 08:30
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: 8
Claim 1
Independent Claim
28 words
A non-combustible fiber coated with lamellae of chemically delaminated vermiculite, the lamellae having a thickness of less than 0.5 micron and an aspect ratio of at least 10.
Claim 2
Dependent Claim
28 words
A non-combustible fiber coated with lamellae of chemically delaminated vermiculite, the lamellae having a thickness of less than 0.5 micron and an aspect ratio of at least 10.
Claim 3
Dependent Claim
24 words
A non-combustible fiber as claimed in claim 1 wherein the amount of the vermiculite lamellae is at least 20% by weight of the fiber.
Claim 4
Dependent Claim
15 words
A non-combustible fiber as claimed in claim 1 wherein the fiber is a glass fiber.
Claim 5
Dependent Claim
21 words
A non-combustible fiber as claimed in claim 1 wherein the vermiculite lamellae are substantially all of maximum dimension below 50 microns.
Claim 6
Dependent Claim
16 words
A non-combustible fiber as claimed in claim 1 wherein the coating additionally comprises a water-stability improver.
Claim 7
Dependent Claim
38 words
A fibrous material comprising an assembly of individual non-combustible fibers each fiber having thereon a coating of lamellae of chemically delaminated vermicultie having a thickness of less than 0.5 micron and an aspect ratio of at least 10.
Claim 8
Dependent Claim
38 words
A fibrous material comprising an assembly of individual non-combustible fibers each fiber having thereon a coating of lamellae of chemically delaminated vermicultie having a thickness of less than 0.5 micron and an aspect ratio of at least 10.
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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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |