US2806801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protector enamel for high temperature metal treating processes
Assignee: Eutectic Corp
•
Filing: 1952-08-15
•
Granted: 1957-09-17
•
Expires: 1972-08-15
Abstract
No abstract record available.
Inventors
- 👤 Theodore I Leston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:18
CPC Classifications
C; C03; C03C; C03C4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A HIGH MELTING POINT PROTECTOR COMPOSITION CAPABLE OF FUSING TO AN ENAMEL-LIKE GLAZE FOR PREVENTING SCALING, BLISTERING AND OXIDATION OF METAL SURFACES DURING HIGH TEMPERATURE HEAT TREATING PROCESSES, CONSISTING ESSENTIALLY OF 1 TO 20 PARTS BY WEIGHT OF METAL SILICATES SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, ALUMINUM AND MAGNESIUM SILICATE AND BETWEEN 5 AND 50 PARTS BY WEIGHT OF ALKALINE EARTH METAL FLUORIDES AND 3 AND 20 PARTS BY WEIGHT OF ALKALI METAL FLUORIDES, AND BETWEEN 0.5 AND 25 PARTS BY WEIGHT OF A CHLORIDE OF A METAL THAT IS COMPATIBLE WITH THE METAL BEING PROTECTED.
Claim 2
Dependent Claim
98 words
A HIGH MELTING POINT PROTECTOR COMPOSITION CAPABLE OF FUSING TO AN ENAMEL-LIKE GLAZE FOR PREVENTING SCALING, BLISTERING AND OXIDATION OF METAL SURFACES DURING HIGH TEMPERATURE HEAT TREATING PROCESSES, CONSISTING ESSENTIALLY OF 1 TO 20 PARTS BY WEIGHT OF METAL SILICATES SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, ALUMINUM AND MAGNESIUM SILICATE AND BETWEEN 5 AND 50 PARTS BY WEIGHT OF ALKALINE EARTH METAL FLUORIDES AND 3 AND 20 PARTS BY WEIGHT OF ALKALI METAL FLUORIDES, AND BETWEEN 0.5 AND 25 PARTS BY WEIGHT OF A CHLORIDE OF A METAL THAT IS COMPATIBLE WITH THE METAL BEING PROTECTED.
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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |