US2908952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an investment mold
Assignee: Motors Liquidation Co
•
Filing: 1957-05-22
•
Granted: 1959-10-20
•
Expires: 1977-05-22
Abstract
No abstract record available.
Inventors
- 👤 Harold L Benham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:36
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/02; B22C9/04; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROTECTIVE COATING SOLUTION FOR APPLICATION TO SURFACES OF A WAX PATTERN TO BE INVESTED IN A REFRACTORY MOLD, SAID SOLUTION COMPRISING, BY WEIGHT, APPROXIMATELY 0.5% TO 4% OF A FILM-FORMING SHORT-CHAIN WATER SOLUBLE ALKYL CELLULOSE, 0.08% TO 8% WETTING AGENT 0.01% TO 0.2%
Claim 2
Dependent Claim
44 words
A PROTECTIVE COATING SOLUTION FOR APPLICATION TO SURFACES OF A WAX PATTERN TO BE INVESTED IN A REFRACTORY MOLD, SAID SOLUTION COMPRISING, BY WEIGHT, APPROXIMATELY 0.5% TO 4% OF A FILM-FORMING SHORT-CHAIN WATER SOLUBLE ALKYL CELLULOSE, 0.08% TO 8% WETTING AGENT 0.01% TO 0.2%
References Cited (Backward Citations)
US2328333A
Cited
US2464060A
Cited
US2461416A
Cited
US2570490A
Cited
US2720464A
Cited
US2752257A
Cited
US2795509A
Cited
US2776904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |