US3250833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making an impregnated ceramic
Assignee: Avco Corp
•
Filing: 1959-05-29
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Granted: 1966-05-10
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Expires: 1979-05-29
Abstract
No abstract record available.
Inventors
- 👤 Richard B Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:25
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B35/00; C04B35/01; C04B35/14; C04B41/45; C04B41/46; C04B41/48; C04B41/80; C04B41/81; C04B41/82; C04B41/83; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE PROCESS OF MAKING AN ABLATION TYPE MATERIAL COMPRISING THE STEPS OF INTIMATELY MIXING SILICA IN POWDER AND COMMUNITED FIBER FORM, BLENDING THE MIXTURE WITH WATER TO FORM A SILICA SLIP, CASTING THE SLIP INTO A DESIRED SHAPE, SETTING THE SLIP AND DECANTING EXCESS WATER THEREFROM, DRYING THE CASTING AND SINTERING IT AT A TEMPERATURE SUFFICIENT TO FORM A RIGID POROUS SKELETON AND FUSING SAID SILICA FIBER AND SILICA POWDER AT LEAST IN PART ONE TO ANOTHER, AND THEREAFTER SUBSTANTIALLY COMPLETELY IMPREGNATING THE SKELETON WITH A THERMOSETTING SYNTHETIC RESIN HAVING INITIALLY A FLUID STATE TO PROVIDE A FINISHED MATERIAL HAVING A DENSITY IN THE RANGE OF ABOUT 1.35 GRAMS PER CUBIC CENTIMETER.
Claim 2
Dependent Claim
112 words
THE PROCESS OF MAKING AN ABLATION TYPE MATERIAL COMPRISING THE STEPS OF INTIMATELY MIXING SILICA IN POWDER AND COMMUNITED FIBER FORM, BLENDING THE MIXTURE WITH WATER TO FORM A SILICA SLIP, CASTING THE SLIP INTO A DESIRED SHAPE, SETTING THE SLIP AND DECANTING EXCESS WATER THEREFROM, DRYING THE CASTING AND SINTERING IT AT A TEMPERATURE SUFFICIENT TO FORM A RIGID POROUS SKELETON AND FUSING SAID SILICA FIBER AND SILICA POWDER AT LEAST IN PART ONE TO ANOTHER, AND THEREAFTER SUBSTANTIALLY COMPLETELY IMPREGNATING THE SKELETON WITH A THERMOSETTING SYNTHETIC RESIN HAVING INITIALLY A FLUID STATE TO PROVIDE A FINISHED MATERIAL HAVING A DENSITY IN THE RANGE OF ABOUT 1.35 GRAMS PER CUBIC CENTIMETER.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |