US3869334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating materials
Assignee: Micropore Insulation Ltd
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Filing: 1973-09-11
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Granted: 1975-03-04
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Expires: 1993-09-11
Abstract
Abstract A panel of thermal insulating material comprises a porous envelope of, for example, fibre glass cloth, containing a consolidated mass of dry particulate microporous insulating material.
Inventors
- 👤 John Thomas Hughes
- 👤 Joseph Anthony Macwilliam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:49
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/029; C; C04; C04B; C04B30/00; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/296; F16L59/028; F16L59/04; B; B32; B32B; B32B2262/00; B32B2262/10; B32B2262/105; B32B2315/00; B32B2315/08; B32B2315/085; C04B2111/00; C04B2111/00474; C04B2111/00612; C04B2111/0062; C04B2111/20; C04B2111/28; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/25; Y10T428/259
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
A RIGID THERMAL INSULATING PANEL CONSISTING ESSENTIALLY OF AN ENVELOPE OF GLASS FIBRE CLOTH CONTAINING A PRESSURECONSOLIDATED MASS OF MICROPOROUS SILICA AEROGEL BEING BONDED TO SAID CLOTH BY PENETRATION OF THE MICROPOROUS SILICA AEROGEL INTO THE PORES OF SAID CLOTH FROM THE APPLICATION OF SAID PRESSURE AND SAID CLOTH BEING IN A STATE OF TENSION.
Claim 2
Dependent Claim
55 words
A RIGID THERMAL INSULATING PANEL CONSISTING ESSENTIALLY OF AN ENVELOPE OF GLASS FIBRE CLOTH CONTAINING A PRESSURECONSOLIDATED MASS OF MICROPOROUS SILICA AEROGEL BEING BONDED TO SAID CLOTH BY PENETRATION OF THE MICROPOROUS SILICA AEROGEL INTO THE PORES OF SAID CLOTH FROM THE APPLICATION OF SAID PRESSURE AND SAID CLOTH BEING IN A STATE OF TENSION.
Claim 3
Dependent Claim
33 words
A panel according to claim 1, wherein said microporous silica aerogel contains an opacifier selected from the group consisting of titanium dioxide, chromium oxide, zirconium oxide, iron oxide, manganese dioxide, and carbon black.
Claim 4
Dependent Claim
14 words
A panel according to claim 1, wherein said microporous silica aerogel contains ceramic fibres.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |