US3725282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive wake quenching system using nonablating material,sulfur and asolid noble gas fluoride
Assignee: Individual
•
Filing: 1971-04-15
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Granted: 1973-04-03
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Expires: 1991-04-15
Abstract
Abstract A SYSTEM FOR PROTECTING A SPACECRAFT OR VEHICLE FROM HEAT WHEN THE VEHICLE REENTERS THE EARTH''S ATMOSPHERE IS PROVIDED THAT COMPRISES AN ABLATIVE COMPOSITION OR A POROUS NONABLATING MATERIAL HAVING DISPERSED THEREIN (1) A MIXTURE OF A SOLID NOBLE GAS FLUORIDE AND ELEMENTAL SULFUR OR (2) A SOLID NOBLE GAS FLUORIDE.
Inventors
- 👤 E Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:56
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/52; B64G1/58
Claims Analysis
Total Claims: 0
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |