Patent US3748112A successfully refreshed from Google Patents.
US3748112A
Expired / Lapsed
US
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Apparatus for transfer of particulate material in glass melters
Assignee: Individual
•
Filing: 1970-09-17
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Granted: 1973-07-24
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Expires: 1990-09-17
Abstract
Abstract Apparatus for transferring particulate material to a high temperature region for thermal processing including means for intermittently transporting particulate material from a location away from the high temperature region to a location at a collection surface in the high temperature region and means for releasing the particulate material from the location at the surface.
Inventors
- 👤 S Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:00
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B37/085; C03B3/00
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |