Patent US2532386A successfully refreshed from Google Patents.
US2532386A
Expired / Lapsed
US
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Colored phosphate glass
Assignee: Corning Glass Works
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Filing: 1949-09-27
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Granted: 1950-12-05
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Expires: 1969-09-27
Abstract
No abstract record available.
Inventors
- 👤 William H Armistead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:43
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/17; C03C3/04; C03C3/062; C03C4/00; C03C4/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COLORED PHOSPHATE GLASS COMPRISING ESSENTIALLY 45% TO 80% P2O5, 8% TO 25% 12O3, 1% TO 30% SIO2, 0.1% TO 5% CUO, AND 0.1% TO 3% CEO2, THE WEIGHT PERCENTAGE RATIOR P2O5/A12O3 BEING BETWEEN 3/1 AND 6/1 AND THE TOTAL PERCENTAGE OF THE ESSENTIAL CONSTITUENTS BEING AT LEAST 80% OF THE TOTAL GLASS COMPOSITION.
Claim 2
Dependent Claim
54 words
A COLORED PHOSPHATE GLASS COMPRISING ESSENTIALLY 45% TO 80% P2O5, 8% TO 25% 12O3, 1% TO 30% SIO2, 0.1% TO 5% CUO, AND 0.1% TO 3% CEO2, THE WEIGHT PERCENTAGE RATIOR P2O5/A12O3 BEING BETWEEN 3/1 AND 6/1 AND THE TOTAL PERCENTAGE OF THE ESSENTIAL CONSTITUENTS BEING AT LEAST 80% OF THE TOTAL GLASS COMPOSITION.
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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |