Patent US3681187A successfully refreshed from Google Patents.
US3681187A
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US
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Carbon fibres embedded in glass matrix
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1969-05-01
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Granted: 1972-08-01
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Expires: 1989-05-01
Abstract
Abstract A NOVEL COMPOSITE MATERIAL COMPRISES GLASS REINFORCED WITH CARBON FIBRES. THE GLASS MAY TYPICALLY BE A BOROSILICATE GLASS OR A NUCLEATED GLASS. THE NOVEL MATERIALS IS HARD AND STRONG, BEING RESISTANT TO MECHANICAL AND THERMAL SHOCK.
Inventors
- 👤 Dennis Herbert Bowen
- 👤 Ronald Alfred James Sambell
- 👤 Keith Albert Dale Lambe
- 👤 Neville John Mattingley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:38
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/02; C03B19/025; C03B13/00; C03B13/12; C03B19/06; C03C; C03C14/00; D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F9/00; D01F9/08; D01F9/12; D01F9/14; D01F9/20; D01F9/21; D01F9/22; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/296; Y10T428/298
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |