US3607608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-reinforced ceramics
Assignee: Owens Corning
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Filing: 1966-01-17
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Granted: 1971-09-21
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Expires: 1986-01-17
Abstract
Abstract A composite having high strength and impact resistance comprising from 30 to 90 percent by volume of a glassy material from the group consisting of the following approximate formulations given in approximate percentages by weight: 4% SiO2, 3% A12O3, 10% B2O3, 83% PbO; and 28.7% SiO2, 9.1% CaO, 11.77% Na2O, 26.3% B2O3, 5.3% ZnO, 17.2% BaO, and 3.1% F2; and having from 10 to 70 percent by volume of stainless steel fibers, boron fibers, or graphite fibers.
Inventors
- 👤 August C Siefert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:51
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C14/00; C03C14/002; C03C3/07; C03C3/072; C04; C04B; C04B35/00; C04B35/71; C04B35/74; C04B35/76; C04B35/78; C04B35/80; C04B35/82; C03C2214/00; C03C2214/02; C03C2214/03; C03C2214/08; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
A composite having high strength and impact resistance comprising: from 30 to 90 percent by volume of a glassy material from the group consisting of the following formulations in approximate percentages by weight: 4 percent SiO2, 3 percent Al2O3, 10 percent B2O3 and 83 percent PbO; and 28.7 percent SiO2, 9.1 percent CaO, 11.77 percent Na2O, 26.3 percent B2O3, 5.3 percent Zno, 17.2 percent BaO and 3.1 percent F2; and having from 10 to 70 percent by volume of fibers therein from the group consisting of austenitic stainless steel fibers, boron fibers and graphite fibers, the surface of which is bonded to the glass.
Claim 2
Dependent Claim
104 words
A composite having high strength and impact resistance comprising: from 30 to 90 percent by volume of a glassy material from the group consisting of the following formulations in approximate percentages by weight: 4 percent SiO2, 3 percent Al2O3, 10 percent B2O3 and 83 percent PbO; and 28.7 percent SiO2, 9.1 percent CaO, 11.77 percent Na2O, 26.3 percent B2O3, 5.3 percent Zno, 17.2 percent BaO and 3.1 percent F2; and having from 10 to 70 percent by volume of fibers therein from the group consisting of austenitic stainless steel fibers, boron fibers and graphite fibers, the surface of which is bonded to the glass.
Claim 3
Dependent Claim
36 words
The composite of claim 1 comprising: a glassy material having the following approximate composition in percent by weight: 4 percent SiO2, 3 percent Al2O3, 10 percent B2O3 and 83 percent PbO, and austenitic stainless steel fibers.
Claim 4
Dependent Claim
45 words
The composite of claim 1 comprising: a glassy material having the following approximate composition in percent by weight: 28.7 percent SiO2, 9.1 percent CaO, 11.7 percent Na2O, 26.3 percent B2O3, 5.3 percent Zno, 17.2 percent BaO and 3.1 percent F2; and austenitic stainless steel fibers.
Claim 5
Dependent Claim
34 words
The composite of claim 1 comprising: a glassy material having the following approximate composition in percent by weight: 4 percent SiO2, 3 percent Al2O3, 10 percent B2O3 and 83 percent PbO, and boron fibers.
Claim 6
Dependent Claim
43 words
The composite of claim 1 comprising: a glassy material having the following approximate composition in percent by weight: 28.7 percent SiO2, 9.1 percent CaO, 11.7 percent Na2O, 26.3 percent B2O3, 5.3 percent Zno, 17.2 percent BaO and 3.1 percent F2; and boron fibers.
Claim 7
Dependent Claim
43 words
The composite of claim 1 comprising: a glassy material having the following approximate composition in percent by weight: 28.7 percent SiO2, 9.1 percent CaO, 11.7 percent Na2O, 26.3 percent B2O3, 5.3 percent Zno, 17.2 percent BaO and 3.1 percent F2; and graphite fibers.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |