US2701902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making molds
Assignee: Monsanto Chemicals Ltd
•
Filing: 1949-12-12
•
Granted: 1955-02-15
•
Expires: 1969-12-12
Abstract
No abstract record available.
Inventors
- 👤 Strachan Mark Noel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:37
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A METHOD OF PREPARING MOULDS IN ACCORDANCE WITH THE INVESTMENT CASTING PROCESS, WHICH COMPRISES COATING THE PATTERN, BEFORE APPLICATION OF THE INVESTMENT, WITH AN AQUEOUS SOLUTION OF AN INORGANIC SILICATE IN WHICH A COLLOIDAL SOLUTION OF SILICA HAS BEEN INCORPORATED.
Claim 2
Independent Claim
40 words
A METHOD OF PREPARING MOULDS IN ACCORDANCE WITH THE INVESTMENT CASTING PROCESS, WHICH COMPRISES COATING THE PATTERN, BEFORE APPLICATION OF THE INVESTMENT, WITH AN AQUEOUS SOLUTION OF AN INORGANIC SILICATE IN WHICH A COLLOIDAL SOLUTION OF SILICA HAS BEEN INCORPORATED.
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) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |