US906339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of matter containing alumina and silica.
Assignee: Unifrax I LLC
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Filing: 1908-03-17
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Granted: 1908-12-08
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Expires: 1928-03-17
Abstract
No abstract record available.
Inventors
- 👤 Frank J Tone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:24
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/16; C04B35/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1911-12-08 | 1912-06-08 | 1912-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-12-08 | 1916-06-08 | 1916-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-12-08 | 1920-06-08 | 1920-12-08 | $7700.00 | Window Closed / Lapsed |