US3306705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making silicon carbide
Assignee: Evonik Operations GmbH
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Filing: 1962-09-06
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Granted: 1967-02-28
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Expires: 1982-09-06
Abstract
No abstract record available.
Inventors
- 👤 Leineweber Gunter
- 👤 Neugebauer Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:50
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/97
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR THE PRODUCTION OF FINELY DIVIDED SILICON CARBIDE WHICH COMPRISES REACTING AN INTIMATE TURBULENT MIXTURE OF A VAPOR PHASE SILICON OXIDE AND A VAPOR PHASE CARBON COMPOUND SELECTED FROM THE GROUP CONSISTONLY ATOMS OF CARBON, HYDROGEN AND OXYGEN WHEREIN THE RATIO OF CARBON TO OXYGEN ATOMS IS AT LEAST 1:1.
Claim 2
Dependent Claim
52 words
A PROCESS FOR THE PRODUCTION OF FINELY DIVIDED SILICON CARBIDE WHICH COMPRISES REACTING AN INTIMATE TURBULENT MIXTURE OF A VAPOR PHASE SILICON OXIDE AND A VAPOR PHASE CARBON COMPOUND SELECTED FROM THE GROUP CONSISTONLY ATOMS OF CARBON, HYDROGEN AND OXYGEN WHEREIN THE RATIO OF CARBON TO OXYGEN ATOMS IS AT LEAST 1:1.
References Cited (Backward Citations)
US3175884A
Cited
US3161473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |