Patent US3296006A successfully refreshed from Google Patents.
US3296006A
Expired / Lapsed
US
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Pattern material composition
Assignee: Precision Metalsmiths Inc
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Filing: 1963-01-28
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Granted: 1967-01-03
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Robert A Horton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:23
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A HEAT DISPOSABLE PATTERN COMPOSITION COMPRISING FROM ABOUT 20% TO ABOUT 70% ETHYL CELLULOSE AND FROM ABOUT 30% TO ABOUT 80% OF A FATTY ACID KETONE, SAID COMPOSITION BEING CHARACTERIZED BY A SOFTENING POINT IN THE RANGE FROM ABOUT 210*F. TO ABOUT 265*F. AND BY SUBSTANTIALLY IMMEDIATE SURFACE MELTING TO A LOW VISCOSITY LIQUID WHEN SUBJECTED TO A TEMPERATURE IN THE RANGE FROM ABOUT 1600*F. TO ABOUT 2300*F.
Claim 2
Dependent Claim
68 words
A HEAT DISPOSABLE PATTERN COMPOSITION COMPRISING FROM ABOUT 20% TO ABOUT 70% ETHYL CELLULOSE AND FROM ABOUT 30% TO ABOUT 80% OF A FATTY ACID KETONE, SAID COMPOSITION BEING CHARACTERIZED BY A SOFTENING POINT IN THE RANGE FROM ABOUT 210*F. TO ABOUT 265*F. AND BY SUBSTANTIALLY IMMEDIATE SURFACE MELTING TO A LOW VISCOSITY LIQUID WHEN SUBJECTED TO A TEMPERATURE IN THE RANGE FROM ABOUT 1600*F. TO ABOUT 2300*F.
References Cited (Backward Citations)
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Cited
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Cited
US2235516A
Cited
US2414093A
Cited
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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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |