US3269802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of carbide structures
Assignee: Horizons Inc
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Filing: 1962-12-10
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Granted: 1966-08-30
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Wainer Eugene
- 👤 Mark S Vukasovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01P; C01P2004/00; C01P2004/10; C01P2006/00; C01P2006/60; Y; Y10; Y10S; Y10S264/00; Y10S264/19; Y10T; Y10T442/00; Y10T442/30; Y10T442/50; Y10T442/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF PREPARING CARBIDE PRODUCTS WHICH COMPRISES: CARBONIZATION OF A CARBONIZABLE ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBONIZABLE FILAMENTS AND PRODUCTS CONSISTING OF WOVEN, NONWOVEN OR FELTED CARBONIZABLE FILAMENTS BY HEATING SAID MATERIAL TO A TEMPERATURE BETWEEN 400*F. AND 2800*F. AND IN A NON-OXIDIZING ATMOSPHERE TO DISTILL OFF NONCARBONACEOUS RESIDUE FROM SAID CARBONIZABLE MATERIAL WHILE SAID CARBONIZABLE MATERIAL IS SUPPORTED IN A MANNER SUCH THAT THE PHYSICAL SHAPE AND STRUCTURE OF THE ORIGINAL MATERIAL ARE RETAINED; AND THEN CONVERTING THE RESULTING CARBONIZED PRODUCT TO CARBIDE OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF BORON, SILICON, TITANIUM, ZIRCONIUM, HAFNIUM, THORIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM, TUNGSTEN AND URANIUM BY HEATING THE CARBONIZED MATERIAL IN AN ATMOSPHERE CONTAINING AS VAPOR A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HALIDES AND CARBONYLS OF SAID CARBIDE FORMING ELEMENT IN AN AMOUNT SUFFICIENT TO PROVIDE A VAPOR PRESSURE OF AT LEAST 10 MM. HG IN SAID ATMOSPHERE.
Claim 2
Independent Claim
158 words
A METHOD OF PREPARING CARBIDE PRODUCTS WHICH COMPRISES: CARBONIZATION OF A CARBONIZABLE ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBONIZABLE FILAMENTS AND PRODUCTS CONSISTING OF WOVEN, NONWOVEN OR FELTED CARBONIZABLE FILAMENTS BY HEATING SAID MATERIAL TO A TEMPERATURE BETWEEN 400*F. AND 2800*F. AND IN A NON-OXIDIZING ATMOSPHERE TO DISTILL OFF NONCARBONACEOUS RESIDUE FROM SAID CARBONIZABLE MATERIAL WHILE SAID CARBONIZABLE MATERIAL IS SUPPORTED IN A MANNER SUCH THAT THE PHYSICAL SHAPE AND STRUCTURE OF THE ORIGINAL MATERIAL ARE RETAINED; AND THEN CONVERTING THE RESULTING CARBONIZED PRODUCT TO CARBIDE OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF BORON, SILICON, TITANIUM, ZIRCONIUM, HAFNIUM, THORIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, MOLYBDENUM, TUNGSTEN AND URANIUM BY HEATING THE CARBONIZED MATERIAL IN AN ATMOSPHERE CONTAINING AS VAPOR A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HALIDES AND CARBONYLS OF SAID CARBIDE FORMING ELEMENT IN AN AMOUNT SUFFICIENT TO PROVIDE A VAPOR PRESSURE OF AT LEAST 10 MM. HG IN SAID ATMOSPHERE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |