US3714111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ablative composites containing novolac fibers
Assignee: Unifrax I LLC
•
Filing: 1970-08-31
•
Granted: 1973-01-30
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Expires: 1990-08-31
Abstract
Abstract A composite comprising a charrable resin or plastic reinforced by fibers prepared from the resin condensation products of phenols and aldehydes which can be fiberized and cured.
Inventors
- 👤 J Economy
- 👤 R Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 22:29
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; Y; Y10; Y10S; Y10S260/00; Y10S260/23
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A composite comprising a charrable resin reinforced by cured phenolic fibers prepared from novolac resin condensation products of phenols and aldehydes which can be fiberized and cured.
Claim 2
Dependent Claim
27 words
A composite comprising a charrable resin reinforced by cured phenolic fibers prepared from novolac resin condensation products of phenols and aldehydes which can be fiberized and cured.
Claim 3
Dependent Claim
15 words
A composite according to claim 1 in which the charrable resin is a phenolic resin.
Claim 4
Dependent Claim
23 words
A composite according to claim 1 which comprises, in addition to phenolic fibers, refractory fibers that do not degrade below about 500* C.
Claim 5
Dependent Claim
31 words
A composite according to claim 1 which comprises in addition to the phenolic fibers, fibers selected from the group consisting of asbestos, glass, silica, boron nitride and carbon and mixtures thereof.
Claim 6
Dependent Claim
29 words
A composite according to claim 1 in which the fibers are present in an amount of from about 35 percent to about 85 percent by volume of the composite.
Claim 7
Dependent Claim
14 words
A composite according to claim 2 having a density in excess of 0.5 gm/cc.
References Cited (Backward Citations)
US3314915A
Cited
US3553002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |