US3160509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature coating for silicon steel
Assignee: Crucible Steel Company of America
•
Filing: 1960-05-18
•
Granted: 1964-12-08
•
Expires: 1980-05-18
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Schaefer
- 👤 James K Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:41
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12; C21D8/1277; C21D8/1283; C23; C23C; C23C24/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A SLUFFY FOR USE IN COATING SILICON-BEARING FERROUS METAL STOCK, COMPRISING A DISPERSOID CONSISTING ESSENTIALLY OF 15 TO 85 PARTS BY WEIGHT CHROMIC OXIDE, 85 TO 15 PARTS BY WEIGHT CALCIUM OXIDE AND UP TO ABOUT 5 PARTS BY WEIGHT BARIUM OXIDE, AND A LIQUID VEHICLE IN SUFFICIENT AMOUNT TO ENABLE THE SLURRY TO BE APPLIED AS A COATING TO THE SURFACE OF THE METAL STOCK.
Claim 2
Dependent Claim
66 words
A SLUFFY FOR USE IN COATING SILICON-BEARING FERROUS METAL STOCK, COMPRISING A DISPERSOID CONSISTING ESSENTIALLY OF 15 TO 85 PARTS BY WEIGHT CHROMIC OXIDE, 85 TO 15 PARTS BY WEIGHT CALCIUM OXIDE AND UP TO ABOUT 5 PARTS BY WEIGHT BARIUM OXIDE, AND A LIQUID VEHICLE IN SUFFICIENT AMOUNT TO ENABLE THE SLURRY TO BE APPLIED AS A COATING TO THE SURFACE OF THE METAL STOCK.
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) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |