US3600341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ablative char-forming compositions containing an intractable polyphenylene polymer
Assignee: United States Department of the Air Force
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Filing: 1966-11-08
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Granted: 1971-08-17
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Expires: 1986-11-08
Abstract
Abstract THIS INVENTION CONTEMPLATES NOVEL PLASTIC COMPOSITIONS, FILLED PLASTIC COMPOSITES, AND COATING MATERIALS WHEREIN THE SAID PLASTIC COMPOSITION IS COMPOSED OF AN INTIMATE MIXTURE OF INTRICTABLE POLYPHENYLENE POLYMER AND A CROSSLINKABLE THERMOSETTING POLYMER. THE INVENTION FURTHER CONTEMPLATES NEW HIGH TEMPERATURE, THERMAL SHIELDING AND THERMAL CONTROL USES FOR THE POLYPHENYLENE MODIFIED POLYMERS AND COMPOSITES, WHICH ARE MADE POSSIBLE BY THE SUPERIOR CHAR FORMING CHARACTERISTICS OF THE RESINOUS MATRIX.
Inventors
- 👤 Donald L Schmidt
- 👤 Paul F Pirrung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:09
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/04; C08L61/06; C08L65/00; C08L65/02; C08G; C08G2261/00; C08G2261/30; C08G2261/31; C08G2261/312
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |