US2948627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding composition and process for producing same
Assignee: EIDP Inc
•
Filing: 1958-04-24
•
Granted: 1960-08-09
•
Expires: 1978-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Alexander L Feild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:16
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2293
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A COMPOSITION FOR FORMING MOLDS TO BE USED IN CASTING REFRACTORY METALS COMPRISING ABOUT 5-15% OF STARCH, ABOUT 6-15% OF PITCH, ABOUT 2-7% OF A SUGAR, WATER IN AN AMOUNT SUFFICIENT TO FORM A MOLDABLE COMPOSITION, AN ORGANIC SURFACE-ACTIVE AGENT IN AN AMOUNT SUFFICIENT TO IMPROVE THE WATER-DISPERSIBILITY OF THE MIXTURE, THE REMAINDER CONSISTING ESSENTIALLY OF GRAPHITE.
Claim 2
Dependent Claim
57 words
A COMPOSITION FOR FORMING MOLDS TO BE USED IN CASTING REFRACTORY METALS COMPRISING ABOUT 5-15% OF STARCH, ABOUT 6-15% OF PITCH, ABOUT 2-7% OF A SUGAR, WATER IN AN AMOUNT SUFFICIENT TO FORM A MOLDABLE COMPOSITION, AN ORGANIC SURFACE-ACTIVE AGENT IN AN AMOUNT SUFFICIENT TO IMPROVE THE WATER-DISPERSIBILITY OF THE MIXTURE, THE REMAINDER CONSISTING ESSENTIALLY OF GRAPHITE.
References Cited (Backward Citations)
US2735814A
Cited
US1165003A
Cited
US1319151A
Cited
US1467112A
Cited
US2558402A
Cited
US2862826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |