US3024121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making colored glass
Assignee: OI Glass Inc
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Filing: 1960-01-14
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Granted: 1962-03-06
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Expires: 1980-01-14
Abstract
No abstract record available.
Inventors
- 👤 Erwin C Hagedorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:49
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/02; C03C1/00; C03C1/02; C03C1/026; C03C1/10; C03C1/105; C03C14/00; C03C14/006
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
IN MAKING A COLORED GLASS, THE BASE COMPOSITION OF WHICH RESIDES WITHIN THE FOLLOWING RANGE: THE METHOD WHICH COMPRISES MELTING AND REFINING A COMPOSITION WITHIN SAID RANGE AND THEREBY PRODUCING A MOLTEN BASE GLASS, PASSING SAID MOLTEN BASE GLASS THROUGH A HEATED FOREHEARTH WHILE ADDING THERETO AND MELTING THEREIN A COLORED GLASS FRIT, SAID FRIT HAVING A BASE COMPOSITION WHEREIN THE OXIDES INCLUDED IN BOTH THE BASE GLASS AND WHEREIN THE OXIDES INCLUDED IN BOTH THE BASE GLASS AND FRIT BASE COMPOSITIONS ARE PRESENT IN EQUAL PERCENTAGES WITH THE EXCEPTION THAT THE PERCERNTAGE OF THE SIO2 CONTENT OF SAID FRIT BASE COMPOSITION IS EQUAL TO THE TOTAL PERCENTAGE OF THE SIO2 AND AL2O3 OF THE BASE GLASS COMPOSITION AND THE FRIT IS FREE FROM AL2O3, SAID FRIT COMPOSTIION INCLUDING IN ADDITION FROM 1.5 TO 2.0 PERCENT CR2O3 AS A COLORING AGENT.
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |