US2564308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of molds
Assignee: Individual
•
Filing: 1950-02-14
•
Granted: 1951-08-14
•
Expires: 1970-02-14
Abstract
No abstract record available.
Inventors
- 👤 Francis A Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
C; C03; C03B; C03B40/00; C03B40/02; B; B22; B22C; B22C3/00; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/24; B22F3/26; B29; B29C; B29C33/00; B29C33/56; B29C33/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE METHOD OF TREATING MOLDS AND THE LIKE, WHICH COMPRISES SPRAYING ON TO A MOLD SURFACE HAVING A TEMPERATURE OF AT LEAST 500* F. AN AQUEOUS DISPERSION OF COLLODIAL GRAPHITE AND A SURFACE ACTIVE AGENT WHICH LOWERS THE SURFACE TENSION OF WATER, AND REGULATING THE DISPERSION APPLIED PER SPRAY INTERVAL TO AN AMOUNT BETWEEN 0.0025 GRAM AND 0.030 GRAM PER SQUARE OF MOLD SURFACE.
Claim 2
Independent Claim
64 words
THE METHOD OF TREATING MOLDS AND THE LIKE, WHICH COMPRISES SPRAYING ON TO A MOLD SURFACE HAVING A TEMPERATURE OF AT LEAST 500* F. AN AQUEOUS DISPERSION OF COLLODIAL GRAPHITE AND A SURFACE ACTIVE AGENT WHICH LOWERS THE SURFACE TENSION OF WATER, AND REGULATING THE DISPERSION APPLIED PER SPRAY INTERVAL TO AN AMOUNT BETWEEN 0.0025 GRAM AND 0.030 GRAM PER SQUARE OF MOLD SURFACE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |