US2857285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature refractory coating for graphite molds
Assignee: Individual
•
Filing: 1954-08-16
•
Granted: 1958-10-21
•
Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Stephen D Stoddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:34
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN ALUMINO SILICTE HIGH TEMPERATURE REFRACTORY MOLD COATING, CONSISTING ESSENTIALLY OF AN AQUEOUS SLURRY OF THE FOLLOWING MIXTURE OF INGREDIENTS BY DRY WEIGHT: 95 PARTS TO 99 PARTS FUSED ALUMINUM OXIDE, 0.5 PART TO 2.0 PARTS BENTONITE, 0.5 PART TO 3.5 PARTS BALL CLAY, AND 0.1 PART TO 0.5 PARTS SOLUBLE SILICATE SALTS, ALL OF SAID INGREDIENTS HAVING AN AVERAGE PARTICLE SIZE OF ABOUT 3.3 MICRONS AND A MAXIMUM OF 44 MICRONS.
Claim 2
Dependent Claim
72 words
AN ALUMINO SILICTE HIGH TEMPERATURE REFRACTORY MOLD COATING, CONSISTING ESSENTIALLY OF AN AQUEOUS SLURRY OF THE FOLLOWING MIXTURE OF INGREDIENTS BY DRY WEIGHT: 95 PARTS TO 99 PARTS FUSED ALUMINUM OXIDE, 0.5 PART TO 2.0 PARTS BENTONITE, 0.5 PART TO 3.5 PARTS BALL CLAY, AND 0.1 PART TO 0.5 PARTS SOLUBLE SILICATE SALTS, ALL OF SAID INGREDIENTS HAVING AN AVERAGE PARTICLE SIZE OF ABOUT 3.3 MICRONS AND A MAXIMUM OF 44 MICRONS.
References Cited (Backward Citations)
GB674477A
Cited
US1318838A
Cited
US1442413A
Cited
US2311228A
Cited
US2685528A
Cited
US2144532A
Cited
US2419290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |