Patent US3077413A successfully refreshed from Google Patents.
US3077413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic fiber products and method and apparatus for manufacture thereof
Assignee: Unifrax I LLC
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Filing: 1957-02-27
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Granted: 1963-02-12
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Robert A Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:36
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A CASTING MOLD HAVING INNER CONFORMING WALLS THAT HAVE THE SMOOTH SURFACE THAT IS CHARACTERISTIC OF A BODY MADE BY WET MOLDING, AND THAT CONSIST ESSENTIALLY OF A RIGID, MONOLITHIC MOLDED LAYER OF A HARDENED, SUBSTANTIALLY HOMOGENOUS MASS OF SILICA-BONDED CERAMIC FIBERS, THE SILICA COMPRISING AT LEAST ABOUT 10% BY WEIGHT OF THE FIBER, DRY BASIS.
Claim 2
Dependent Claim
56 words
A CASTING MOLD HAVING INNER CONFORMING WALLS THAT HAVE THE SMOOTH SURFACE THAT IS CHARACTERISTIC OF A BODY MADE BY WET MOLDING, AND THAT CONSIST ESSENTIALLY OF A RIGID, MONOLITHIC MOLDED LAYER OF A HARDENED, SUBSTANTIALLY HOMOGENOUS MASS OF SILICA-BONDED CERAMIC FIBERS, THE SILICA COMPRISING AT LEAST ABOUT 10% BY WEIGHT OF THE FIBER, DRY BASIS.
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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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |