US3609829A
Expired / Lapsed
US
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Apparatus for the formation of silica articles
Assignee: Texas Instruments Inc
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Filing: 1968-07-12
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Granted: 1971-10-05
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Expires: 1988-07-12
Abstract
Abstract Gaseous streams of silicon tetrachloride and combustible reactants are directed toward a mandrel having an exterior coating of silicon carbide. When the gaseous streams are ignited, the silicon tetrachloride is decomposed and high purity silicone dioxide is deposited upon the silicon carbide surface. After cooling, the silicon dioxide article is easily removed from the silicon carbide surface.
Inventors
- 👤 Michael A Carrell
- 👤 Paul C Goundry
- 👤 Robert C Post
- 👤 Kenneth E Mcneill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/18; C01B33/181; C01B33/183; C01G; C01G1/00; C01G1/06; C03; C03B; C03B19/00; C03B19/14; C03B19/1415; C03B19/1423; C03B19/1484; C03B19/1492; C03B2207/00; C03B2207/04; C03B2207/06; C03B2207/12; C03B2207/20; C03B2207/42
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |