US3203815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature protective coating for metals
Assignee: North American Aviation Corp
•
Filing: 1962-12-21
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Granted: 1965-08-31
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Harold J Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:09
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0054; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C8/00; C03C8/02; C03C8/10; C23; C23C; C23C24/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CERAMIC AND METALLIC PROTECTIVE COATING COMPOSITION FOR APPLICATION TO METALS AT A FIRING TEMPERATURE OF APPROXIMATELY 1250*F.-1600*F., SAID COATING COMPOSITION CONSISTING OF FROM 15 TO 60 PARTS BY WEIGHT OF A HOMOGENEOUS TWO-LIQUID-PHASE GLASS FRIT HAVING INCLUDED WETTING AND SEAL-FORMING GLASS SYSTEMS, FROM 2 TO 17 PARTS BY WEIGHT OF REFRACTORY OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ALUMINUM, BARIUM, CHROMIUM, IRON, MANGANESE, NICKEL, TITANIUM, AND ZIRCONIU, AND FROM 20 TO 80 PARTS BY WEIGHT OF POWDERED ALUMIUM METAL, SAID GLASS FRIT HAVING A CALCULATED OXIDE CONTENT OF FROM 45% TO 55% BORIC OXIDE, FROM 3% TO 7% LEAD OXIDE, FROM 5% TO 12% CALCIUM OXIDE, FROM 5% TO 12% BARIUM OXIDE, FROM 0.5% TO 5% SILICA, FROM 8% TO 13% SODIUM OXIDE, AND FROM 8% TO 13% ALUMINUM OXIDE.
Claim 2
Dependent Claim
134 words
A CERAMIC AND METALLIC PROTECTIVE COATING COMPOSITION FOR APPLICATION TO METALS AT A FIRING TEMPERATURE OF APPROXIMATELY 1250*F.-1600*F., SAID COATING COMPOSITION CONSISTING OF FROM 15 TO 60 PARTS BY WEIGHT OF A HOMOGENEOUS TWO-LIQUID-PHASE GLASS FRIT HAVING INCLUDED WETTING AND SEAL-FORMING GLASS SYSTEMS, FROM 2 TO 17 PARTS BY WEIGHT OF REFRACTORY OXIDE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES OF ALUMINUM, BARIUM, CHROMIUM, IRON, MANGANESE, NICKEL, TITANIUM, AND ZIRCONIU, AND FROM 20 TO 80 PARTS BY WEIGHT OF POWDERED ALUMIUM METAL, SAID GLASS FRIT HAVING A CALCULATED OXIDE CONTENT OF FROM 45% TO 55% BORIC OXIDE, FROM 3% TO 7% LEAD OXIDE, FROM 5% TO 12% CALCIUM OXIDE, FROM 5% TO 12% BARIUM OXIDE, FROM 0.5% TO 5% SILICA, FROM 8% TO 13% SODIUM OXIDE, AND FROM 8% TO 13% ALUMINUM OXIDE.
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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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |