Patent US1389480A successfully refreshed from Google Patents.
Patent US3198641A successfully refreshed from Google Patents.
US3198641A
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Composition for making high index beads
Assignee: Cataphote Inc
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Filing: 1961-10-19
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Granted: 1965-08-03
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Expires: 1981-10-19
Abstract
No abstract record available.
Inventors
- 👤 Charles E Searight
- 👤 Ezra M Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:00
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C12/00; C03C12/02; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A GLASS FOR USE IN THE MANUFACTURE OF GLASS BEADS HAVING AN INDEX OF REFRACTION OF ABOUT 1.9 CONSISTING ESSENTIALLY OF FROM ABOUT 32 TO ABOUT 38 MOL PERCENT TITANIUM DIOXIDE; FROM ABOUT 3.5 TO ABOUT 6 MOL PERCENT ZIRCONIUM DIOXIDE; FROM ABOUT 40 TO ABOUT 43 MOL PERCENT BARIUM OXIDE; FROM ABOUT 13 TO ABOUT 15 MOL PERCENT BORIC OXIDE; AND ABOUT 6 MOL PERCENT ZINC OXIDE.
Claim 2
Dependent Claim
68 words
A GLASS FOR USE IN THE MANUFACTURE OF GLASS BEADS HAVING AN INDEX OF REFRACTION OF ABOUT 1.9 CONSISTING ESSENTIALLY OF FROM ABOUT 32 TO ABOUT 38 MOL PERCENT TITANIUM DIOXIDE; FROM ABOUT 3.5 TO ABOUT 6 MOL PERCENT ZIRCONIUM DIOXIDE; FROM ABOUT 40 TO ABOUT 43 MOL PERCENT BARIUM OXIDE; FROM ABOUT 13 TO ABOUT 15 MOL PERCENT BORIC OXIDE; AND ABOUT 6 MOL PERCENT ZINC OXIDE.
References Cited (Backward Citations)
US2434149A
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US2554952A
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US2566134A
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US2943059A
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US2870030A
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US2939797A
Cited
US3013888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |