US3017279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color stable white porcelain enamel and method of producing same
Assignee: Eagle Picher Co
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Filing: 1961-02-13
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Granted: 1962-01-16
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Expires: 1981-02-13
Abstract
No abstract record available.
Inventors
- 👤 Harry J Van Dolah
- 👤 Otto C Linhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:56
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/14; C03C8/20; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/076; C03C3/089; C03C4/00; C03C8/18; C03C2204/00; C03C2204/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN OPACIFIED ENAMELING FRIT HAVING AN ENHANCED COLOR STABILITY OVER AN EXTENDED FIRING RANGE, SAID FRIT CONSISTING ESSENTIALLY OF FROM 20-5K% BY WEIGHT SIO2, FROM 8-24% TIO2, FROM 5-2K% B2O3, FROM 0-25% NA2O, FROM 0-25% K2O, FROM 0-5% LI2O, FROM 0-5% ZNO, FROM 0-4% AL2O3, FROM 0-3% MGO, FROM 0-5% P2O5, FROM 0-20% F, FROM 0-10% ZRO2, FROM 0.01 TO 0.20% CUPRIC OXIDE, AND FROM 0.0002 TO 0.006% GOLD.
Claim 2
Dependent Claim
69 words
AN OPACIFIED ENAMELING FRIT HAVING AN ENHANCED COLOR STABILITY OVER AN EXTENDED FIRING RANGE, SAID FRIT CONSISTING ESSENTIALLY OF FROM 20-5K% BY WEIGHT SIO2, FROM 8-24% TIO2, FROM 5-2K% B2O3, FROM 0-25% NA2O, FROM 0-25% K2O, FROM 0-5% LI2O, FROM 0-5% ZNO, FROM 0-4% AL2O3, FROM 0-3% MGO, FROM 0-5% P2O5, FROM 0-20% F, FROM 0-10% ZRO2, FROM 0.01 TO 0.20% CUPRIC OXIDE, AND FROM 0.0002 TO 0.006% GOLD.
References Cited (Backward Citations)
US2515940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |