Patent US3068108A successfully refreshed from Google Patents.
US3068108A
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Optical type glass compositions with high fluorine and titanium content
Assignee: Schott AG
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Filing: 1959-02-03
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Granted: 1962-12-11
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Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 Geffcken Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/23; C03C3/247; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A FLUOPHOSPHATE TITANIUM OPTICAL GLASS COMPOSITION HAVING A REFRACTION INDEX OF ABOUT 1.51-1.64 AND A DISPERSION OF ABOUT 18.5-42.2, AND ESSENTIALLY CONSISTING OF THE SYSTEM K2TIF6-NAPO3-P2O5, WHEREIN THE CONTENT IN 52TIF6, NAPO3 AND P2O5, RESPECTIVELY IN WEIGHT PERCENT IS WITHIN THE RANGE DEFINED BY RECTILINEAR CONNECTION OF THE POINTS S(I//60/20), B (60/6/34), C (60/0/40), D (73/0/27), E (50/50/0) AND F (20/80/0).
Claim 2
Dependent Claim
61 words
A FLUOPHOSPHATE TITANIUM OPTICAL GLASS COMPOSITION HAVING A REFRACTION INDEX OF ABOUT 1.51-1.64 AND A DISPERSION OF ABOUT 18.5-42.2, AND ESSENTIALLY CONSISTING OF THE SYSTEM K2TIF6-NAPO3-P2O5, WHEREIN THE CONTENT IN 52TIF6, NAPO3 AND P2O5, RESPECTIVELY IN WEIGHT PERCENT IS WITHIN THE RANGE DEFINED BY RECTILINEAR CONNECTION OF THE POINTS S(I//60/20), B (60/6/34), C (60/0/40), D (73/0/27), E (50/50/0) AND F (20/80/0).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |