Patent US3300412A successfully refreshed from Google Patents.
US3300412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorescent opal glasses
Assignee: Corning Glass Works
•
Filing: 1963-08-07
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Granted: 1967-01-24
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Expires: 1983-08-07
Abstract
No abstract record available.
Inventors
- 👤 Leo A Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:23
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C4/00; C03C4/005; C03C4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A METHOD OF MAKING A PHOSPHORESCENT OPAL GLASS COMPRISING: FIRING A BATCH COMPOSITION CONSISTING ESSENTIALLY IN WEIGHT PERCENT ON THE OXIDE BASIS OF:
Claim 2
Independent Claim
23 words
A METHOD OF MAKING A PHOSPHORESCENT OPAL GLASS COMPRISING: FIRING A BATCH COMPOSITION CONSISTING ESSENTIALLY IN WEIGHT PERCENT ON THE OXIDE BASIS OF:
References Cited (Backward Citations)
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US2049765A
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US2241950A
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US2219895A
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US2503140A
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US2993001A
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US3077456A
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US3236781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |