US3544293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alpha-cristobalite fibers
Assignee: Corning Glass Works
•
Filing: 1968-04-26
•
Granted: 1970-12-01
•
Expires: 1988-04-26
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Riebling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:56
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/006; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C03B; C03B37/00; C30; C30B; C30B1/00; C30B1/02; C30B29/00; C30B29/10; C30B29/16; C30B29/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |