US3252827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory carbide bodies and method of making them
Assignee: Unifrax I LLC
•
Filing: 1958-11-05
•
Granted: 1966-05-24
•
Expires: 1978-11-05
Abstract
No abstract record available.
Inventors
- 👤 Carl G Rose
- 👤 James C Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:56
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/573; C04B41/45; C04B41/50; C04B41/5053; C04B41/5062; C04B41/5071; C04B41/80; C04B41/81; C04B41/85; C04B41/87; H; H01; H01B; H01B1/00; H01B1/04; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/148; H05B2203/00; H05B2203/018; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/292; Y10T428/2933; Y10T428/2971
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
AN ELECTRICAL RESISTANCE HEATING ELEMENT COMPRISING A BODY CONSISTING ESSENTIALLY OF SILICON CARBIDE IMPREGNATED WITH MOLYBDENUM SILICIDE.
Claim 2
Dependent Claim
17 words
AN ELECTRICAL RESISTANCE HEATING ELEMENT COMPRISING A BODY CONSISTING ESSENTIALLY OF SILICON CARBIDE IMPREGNATED WITH MOLYBDENUM SILICIDE.
References Cited (Backward Citations)
US2735881A
Cited
US1906963A
Cited
US1978323A
Cited
US2406275A
Cited
US2431326A
Cited
GB780735A
Cited
GB739780A
Cited
US2814857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |