US2851376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enamelling process
Assignee: Eisenwerke Kaiserslautern GmbH
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Filing: 1956-04-25
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Granted: 1958-09-09
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Expires: 1976-04-25
Abstract
No abstract record available.
Inventors
- 👤 Adlassnig Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
C; C03; C03C; C03C4/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31714
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
THE PROCESS OF PRODUCING VITEROUS ENAMEL LAYERS HAVING HIGH RESISTANCE TO MECHANICAL STRESS AND TEMPERATURE CHANGES, WHICH COMPRISES INTIMATELY MIXING WITH A VITREOUS ENAMEL TO BE APPLIED, A FINELY DIVIDED ADDITIVE SUBSTANCE, BEING CHEMICALLY RESISTANT, HAVING A HIGH MELTING POINT, BEING INSOLUBLE IN AND THEREAFTER POORLY WETTABLE BY MOLTEN ENAMEL, SAID ADDITIVE BEING SELECTED FROM THE GROUP CONSISTING OF THE CARBIDES OF BORON, SILICON, TITANIUM, ZIRCONIUM, VANDADIUM, CHROMIUM, MOLYBDENUM AND TUGSTEN, SAID ADDITIVE SUBSTANCE BEING MIXED WITH SAID VITREOUS ENAMEL IN A QUANTITY BETWEEN 2 AND 35 PERCENT BY WEIGHT WITH RESPECT TO SAID VITEROUS ENAMEL, FIRING THE MIXTURE AT A TEMPERATURE ABOVE ITS SOFTENING TEMPERATURE SO THAT IT FORMS A COHERENT MASS, FINELY DIVIDING SAID COHERENT MASS AFTER COOLING, THUS FORMING AN ENAMELLING MIXTURE, COATING A BASE STRUCTURE WITH THE ENAMELLING MIXTURE AND FUSING IT TO FORM A LAYER OF ENAMEL, WHEREBY A POLYAMORPHOUS ENAMEL LAYER HAVING MANY PHASE BOUNDARY SURFACES RESULTS.
Claim 2
Dependent Claim
153 words
THE PROCESS OF PRODUCING VITEROUS ENAMEL LAYERS HAVING HIGH RESISTANCE TO MECHANICAL STRESS AND TEMPERATURE CHANGES, WHICH COMPRISES INTIMATELY MIXING WITH A VITREOUS ENAMEL TO BE APPLIED, A FINELY DIVIDED ADDITIVE SUBSTANCE, BEING CHEMICALLY RESISTANT, HAVING A HIGH MELTING POINT, BEING INSOLUBLE IN AND THEREAFTER POORLY WETTABLE BY MOLTEN ENAMEL, SAID ADDITIVE BEING SELECTED FROM THE GROUP CONSISTING OF THE CARBIDES OF BORON, SILICON, TITANIUM, ZIRCONIUM, VANDADIUM, CHROMIUM, MOLYBDENUM AND TUGSTEN, SAID ADDITIVE SUBSTANCE BEING MIXED WITH SAID VITREOUS ENAMEL IN A QUANTITY BETWEEN 2 AND 35 PERCENT BY WEIGHT WITH RESPECT TO SAID VITEROUS ENAMEL, FIRING THE MIXTURE AT A TEMPERATURE ABOVE ITS SOFTENING TEMPERATURE SO THAT IT FORMS A COHERENT MASS, FINELY DIVIDING SAID COHERENT MASS AFTER COOLING, THUS FORMING AN ENAMELLING MIXTURE, COATING A BASE STRUCTURE WITH THE ENAMELLING MIXTURE AND FUSING IT TO FORM A LAYER OF ENAMEL, WHEREBY A POLYAMORPHOUS ENAMEL LAYER HAVING MANY PHASE BOUNDARY SURFACES RESULTS.
Claim 3
Dependent Claim
86 words
THE PROCESS OF FORMING A COMPOSITE LAYER HAVING HIGH RESISTANCE TO MECHANICAL STRESS AND TEMPERATURE CHANGES, WHICH COMPRISES ALTERNATELY FUSING ON THE BASE STRUCTURE TO BE COATED, ENAMEL LAYERS OF VITEROUS ENAMELLING MATERIAL AND ENAMEL LAYERS OF ENAMELLING MIXTURES COMPOUND ACCORDING TO THE PROCESS OF CLAIM 1, COMPRISING FIRST APPLYING TO AN ARTICLE TO BE COATED OF VITREOUS ENAMEL, NEXT APPLYING SAID MIXTURE COMPOUND ACCORDING TO THE PROCESS OF CLAIM 1, FURTHER APPLYING VITREOUS ENAMEL MIXTURE, AND FINALY APPLYING SAID MIXTURE COMPOUNDED ACCORDING TO CLAIM 1.
References Cited (Backward Citations)
US2311039A
Cited
US2756168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |