US3246950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing fibrous silicon carbide
Assignee: Monsanto Co
•
Filing: 1961-01-03
•
Granted: 1966-04-19
•
Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Bernard A Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:36
CPC Classifications
C; C30; C30B; C30B25/00; C30B25/005; C30B29/00; C30B29/10; C30B29/36; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
23 words
PROCESS FOR THE PRODUCTION OF A FIBROUS FORM OF SILICON CARBIDE BY THE REACTION OF SILICON MONOXIDE AND CARBON MONOXIDE IN VAPOR PHASE.
Claim 2
Dependent Claim
23 words
PROCESS FOR THE PRODUCTION OF A FIBROUS FORM OF SILICON CARBIDE BY THE REACTION OF SILICON MONOXIDE AND CARBON MONOXIDE IN VAPOR PHASE.
Claim 3
Dependent Claim
69 words
PROCESS FOR THE PRODUCTION OF A FIBROUS FORM OF SILICON CARBIDE BY THE REACTION OF SILICON MONOXIDE AND CARBON MONOXIDE IN VAPOR PHASE TO PRODUCE A MONOCRYSSTALLINE FORM OF SILICON CARBIDE HAVING A FIBROUS STRUCTURE, AND COLLECTING THE SAID FIBROUS PRODUCT AND THEREAFTER CONTACTING THE SAID FIBROUS PRODUCT WITH HYDROFLUORIC ACID TO DISSOLVE MINOR PROPORTIONS OF SILICON IMPURITIES WHILE LEAVING THE SAID FIBROUS SILICON CARBIDE AS THE RESIDUAL PRODUCT.
Claim 4
Dependent Claim
69 words
PROCESS FOR THE PRODUCTION OF A FIBROUS FORM OF SILICON CARBIDE BY THE REACTION OF SILICON MONOXIDE AND CARBON MONOXIDE IN VAPOR PHASE TO PRODUCE A MONOCRYSSTALLINE FORM OF SILICON CARBIDE HAVING A FIBROUS STRUCTURE, AND COLLECTING THE SAID FIBROUS PRODUCT AND THEREAFTER CONTACTING THE SAID FIBROUS PRODUCT WITH HYDROFLUORIC ACID TO DISSOLVE MINOR PROPORTIONS OF SILICON IMPURITIES WHILE LEAVING THE SAID FIBROUS SILICON CARBIDE AS THE RESIDUAL PRODUCT.
References Cited (Backward Citations)
US1104384A
Cited
US1504547A
Cited
US1331435A
Cited
US1488311A
Cited
US2641525A
Cited
US2952040A
Cited
US2807856A
Cited
US2862795A
Cited
US2882568A
Cited
US2897572A
Cited
US2871152A
Cited
US2913313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |