US3230110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming carbon vapor barrier
Assignee: Temescal Metallurgical Corp
•
Filing: 1962-01-22
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Granted: 1966-01-18
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Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Hugh R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:23
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5053; C04B41/5057; C04B41/80; C04B41/81; C04B41/85; C04B41/87; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD OF FORMING IN SITU A METAL CARBIDE VAPOR BARRIER ON THE SURFACE OF A CARBON BODY SO AS TO PROVIDE A CARBON BODY THAT IS RESISTANT TO VAPORIZATION AT HIGH TEMPERATURES, WHICH METHOD COMPRISES PLACING THE CARBON BODY IN A FURNACE CHAMBER CONTAINING IN SPACED RELATION THERETO A METAL CAPABLE OF REACTING WITH CARBON TO FORM A SOLID, NON-POROUS METAL CARBIDE THAT IS SUBSTANTIALLY STABLE AT A TEMPERATURE OF 2500*C., EVACUATING THE FURNACE CHAMBER TO A HIGH VACUUM AND HEATING THE CARBON BODY TO A TEMPERATURE BETWEEN ABOUT
Claim 2
Independent Claim
90 words
THE METHOD OF FORMING IN SITU A METAL CARBIDE VAPOR BARRIER ON THE SURFACE OF A CARBON BODY SO AS TO PROVIDE A CARBON BODY THAT IS RESISTANT TO VAPORIZATION AT HIGH TEMPERATURES, WHICH METHOD COMPRISES PLACING THE CARBON BODY IN A FURNACE CHAMBER CONTAINING IN SPACED RELATION THERETO A METAL CAPABLE OF REACTING WITH CARBON TO FORM A SOLID, NON-POROUS METAL CARBIDE THAT IS SUBSTANTIALLY STABLE AT A TEMPERATURE OF 2500*C., EVACUATING THE FURNACE CHAMBER TO A HIGH VACUUM AND HEATING THE CARBON BODY TO A TEMPERATURE BETWEEN ABOUT
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |