Patent US3623904A successfully refreshed from Google Patents.
US3623904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric composition containing silicon carbide for use as an ablative coating
Assignee: Dow Silicones Corp
•
Filing: 1969-02-10
•
Granted: 1971-11-30
•
Expires: 1989-02-10
Abstract
Abstract A METHOD FOR PROTECTING THE SURFACE OF AEROSPACE VEHICLES FROM THE ERODING EFFECTS OF TURBULENT GASES AND EXTREMETLY SEVERE TEMPERATURES WHICH METHOD CONSISTS OF COATING THE SURFACE OF THE VEHICLE WITH AN ORGANOSILOXANE ELASTOMER WHICH HAS INCLUDED THERIN SPECIFIC QUANTITIES OF POWDERED SILICON CARBIDE, SILICA AND A HIGH TEMPERATURE DECOMPOSING FIBER WHICH MELTS AT A TEMPERATURE ABOVE 3000*F.
Inventors
- 👤 James A Ramseyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:31
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |