US3702841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intumescent paint containing nitrile rubber
Assignee: National Aeronautics and Space Administration
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Filing: 1971-02-12
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Granted: 1972-11-14
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Expires: 1991-02-12
Abstract
Abstract AN INTUMESCENT AGENT IS PROVIDED WHICH CONTAINS PARANITROANILINE-BISULFATE DISPERSED IN A MIXTURE OF AN ACRYLONITRILE-BUTADIENE COPOLYMER AND A PHENOLIC RESIN. THE ADHESION AND WATER RESISTANCE ARE BOTH GREATER THAN INTUMESCENT AGENTS KNOWN IN THE PAST.
Inventors
- 👤 Paul M Sawko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:24
CPC Classifications
C; C09; C09D; C09D109/00; C09D109/02; C09D161/00; C09D161/04; C09D161/06; C09D5/00; C09D5/18; C09D5/185; C08; C08K; C08K5/00; C08K5/16; C08K5/32; C08K5/36; C08K5/41; C08L; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
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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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |