US3628995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant cloth
Assignee: Unifrax I LLC
•
Filing: 1968-10-03
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Granted: 1971-12-21
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Expires: 1988-10-03
Abstract
Abstract A flame resistant cloth or fabric comprising synthetic fibers prepared from resin condensation products of phenols and aldehydes which can be fiberized and cured. These fabrics may include blends of phenolic resin fibers with other fire-resistant fibers such as wool, silk, polyamide fibers, polyacrylonitrile fibers, mineral and glass fibers, among others.
Inventors
- 👤 James Economy
- 👤 Francis J Frechette
- 👤 Luis C Wohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/41; A; A41; A41D; A41D31/00; A41D31/04; A41D31/08; C; C01; C01B; C01B32/00; D01; D01F; D01F6/00; D01F6/58; D01F6/76; D03; D03D; D03D15/00; D03D15/50; D03D15/513; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31942; Y10T428/31946; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2713
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
27 words
A flame resistant fabric according to claim 1 in which the coating is a layer of resin selected from the group consisting of phenolic and fluorocarbon resins.
Claim 2
Dependent Claim
24 words
A flame-resistant fabric consisting essentially of phenolic fibers of cured novolac resin condensation products of phenols and aldehydes, and a liquid impenetrable coating thereon.
Claim 3
Dependent Claim
26 words
A Flame-resistant fabric according to claim 3 in which the coating is a layer of resin selected from the group consisting of phenolic and fluorocarbon resins.
References Cited (Backward Citations)
US1309581A
Cited
US2312296A
Cited
US2186917A
Cited
FR860045A
Cited
US2535373A
Cited
US2782174A
Cited
US2833681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |