US3419403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High index of refraction glass compositions
Assignee: Cataphote Inc
•
Filing: 1963-03-18
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Granted: 1968-12-31
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 Charles E Searight
- 👤 Ezra M Alexander
- 👤 John R Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:59
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/127; C03C3/04; C03C3/062; C03C3/14; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
43 words
A HIGH REFRACTIVE INDEX GLASS COMPOSITION CONSISTING ESSENTIALLY OF A VITREOUS FUSION PRODUCT OF A MIXTURE OF TITANIUM OXIDE AND BARIUM PEROXIDE IN THE MOLAR RATIO GREATER THAN 2.0 AND UP TO 2.2, AND WHEREIN THE TITANIUM ION IS PRESENT, PREPONDERANTLY, AS TIO6**-8.
Claim 2
Dependent Claim
43 words
A HIGH REFRACTIVE INDEX GLASS COMPOSITION CONSISTING ESSENTIALLY OF A VITREOUS FUSION PRODUCT OF A MIXTURE OF TITANIUM OXIDE AND BARIUM PEROXIDE IN THE MOLAR RATIO GREATER THAN 2.0 AND UP TO 2.2, AND WHEREIN THE TITANIUM ION IS PRESENT, PREPONDERANTLY, AS TIO6**-8.
Claim 3
Dependent Claim
129 words
A HIGH REFRACTIVE INDEX GLASS COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 60% TO ABOUT 100% BY WEIGHT OF A VITREOUS FUSION PRODUCT OF A MIXTURE OF TITANIUM OXIDE AND BARIUM PEROXIDE IN THE MOLAR RATIO OF FROM ABOUT 0.9 TO ABOUT 2.2 FROM ABOUT 0 TO ABOUT 40% BY WEIGHT OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF BISMUTH OXIDE AND ANTIMONY OXIDES, FROM 0 TO ABOUT 6% BY WEIGHT OF AT LEAST ONE ALKALI METAL OXIDE OF THE GROUP CONSISTING OF LITHIUM, SODIUM AND POTASSIUM OXIDES AND FROM ABOUT 0.2 TO ABOUT 12% BY WEIGHT OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF SILICON DIOXIDE, BORIC OXIDE, PHOSPHORIC OXIDE AND GERMANIUM DIOXIDE, AND WHEREIN THE TITANIUM ION IS PRESENT, PREPONDERANTLY, AS TIO6**-8.
Claim 4
Dependent Claim
129 words
A HIGH REFRACTIVE INDEX GLASS COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 60% TO ABOUT 100% BY WEIGHT OF A VITREOUS FUSION PRODUCT OF A MIXTURE OF TITANIUM OXIDE AND BARIUM PEROXIDE IN THE MOLAR RATIO OF FROM ABOUT 0.9 TO ABOUT 2.2 FROM ABOUT 0 TO ABOUT 40% BY WEIGHT OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF BISMUTH OXIDE AND ANTIMONY OXIDES, FROM 0 TO ABOUT 6% BY WEIGHT OF AT LEAST ONE ALKALI METAL OXIDE OF THE GROUP CONSISTING OF LITHIUM, SODIUM AND POTASSIUM OXIDES AND FROM ABOUT 0.2 TO ABOUT 12% BY WEIGHT OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF SILICON DIOXIDE, BORIC OXIDE, PHOSPHORIC OXIDE AND GERMANIUM DIOXIDE, AND WHEREIN THE TITANIUM ION IS PRESENT, PREPONDERANTLY, AS TIO6**-8.
References Cited (Backward Citations)
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US2584974A
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US2774675A
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US2870030A
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US2980547A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |