US3174871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass containing lanthanum borosilicate and rich in aluminum oxide
Assignee: Schott AG
•
Filing: 1959-07-27
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Granted: 1965-03-23
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Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Geffcken Walter
- 👤 Faulstich Marga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:17
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/068; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A LANTHANUM BOROSILICATE GLASS CONTAINING ALUMINUM OXIDE AND HAVING AN ND VALUE OF FROM ABOUT 1,67-1.80
Claim 2
Dependent Claim
16 words
A LANTHANUM BOROSILICATE GLASS CONTAINING ALUMINUM OXIDE AND HAVING AN ND VALUE OF FROM ABOUT 1,67-1.80
References Cited (Backward Citations)
US2584975A
Cited
US2805166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |