US3035928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass composition
Assignee: Cataphote Inc
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Filing: 1960-10-14
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Granted: 1962-05-22
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Expires: 1980-10-14
Abstract
No abstract record available.
Inventors
- 👤 Charles E Searight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:51
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/089; C03C3/091; C03C12/00; C03C12/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A GLASS COMPOSITION FOR THE MANUFACTURE OF GLASS BEADS HAVING A REFRACTIVE INDEX OF FROM ABOUT 1.50 TO ABOUT 1.60 CONSISTING ESSENTIALLY OF FROM ABOUT 65% TO ABOUT 66% SILICON DIOXIDE; FROM ABOUT 5% TO ABOUT 12% BORIC OXIDE; FROM ABOUT 16% TO ABOUT 19% SODIUM OXIDE; FROM ABOUT 1% TO ABOUT 4% OF AT LEAST ONE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF LITHIUM OXIDE AND POTASSIUM OXIDE; FROM ABOUT 4% TO ABOUT 6% CALCIUM OXIDE; FROM 0 TO ABOUT 3% MAGNESIUM OXIDE; AND FROM ABOUT 1% TO ABOUT 3% OF AT LEAST ONE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF FERRIC OXIDE AND ALUMINUM OXIDE.
Claim 2
Dependent Claim
109 words
A GLASS COMPOSITION FOR THE MANUFACTURE OF GLASS BEADS HAVING A REFRACTIVE INDEX OF FROM ABOUT 1.50 TO ABOUT 1.60 CONSISTING ESSENTIALLY OF FROM ABOUT 65% TO ABOUT 66% SILICON DIOXIDE; FROM ABOUT 5% TO ABOUT 12% BORIC OXIDE; FROM ABOUT 16% TO ABOUT 19% SODIUM OXIDE; FROM ABOUT 1% TO ABOUT 4% OF AT LEAST ONE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF LITHIUM OXIDE AND POTASSIUM OXIDE; FROM ABOUT 4% TO ABOUT 6% CALCIUM OXIDE; FROM 0 TO ABOUT 3% MAGNESIUM OXIDE; AND FROM ABOUT 1% TO ABOUT 3% OF AT LEAST ONE METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF FERRIC OXIDE AND ALUMINUM OXIDE.
References Cited (Backward Citations)
US2582852A
Cited
US2877124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |