US2424082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina low silica refractory
Assignee: Saint Gobain Ceramics and Plastics Inc
•
Filing: 1945-04-10
•
Granted: 1947-07-15
•
Expires: 1965-04-10
Abstract
No abstract record available.
Inventors
- 👤 Field Theodore Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:23
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/42; C04B35/10; C04B35/107; C04B35/12; C04B35/44; C04B35/48; C04B35/484
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2271366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |