Patent US2605432A successfully refreshed from Google Patents.
Patent US2928887A successfully refreshed from Google Patents.
US2928887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for refining glass
Assignee: Schott AG
•
Filing: 1956-07-25
•
Granted: 1960-03-15
•
Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Eden Carsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:49
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/225
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1610376A
Cited
US1610377A
Cited
US1878591A
Cited
GB404733A
Cited
US1933527A
Cited
US2089690A
Cited
US2336412A
Cited
US2417913A
Cited
US2545619A
Cited
US2649487A
Cited
US2707717A
Cited
US2749378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |