Patent US3077647A successfully refreshed from Google Patents.
US3077647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parting agent for sprayed metal shells and method for making such shells
Assignee: Motors Liquidation Co
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Filing: 1959-07-13
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Granted: 1963-02-19
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Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Kugler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:06
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PARTING COMPOSTION FOR COATING THE SURFACE OF A PATTERN TO BE METAL SPRAYED FOR BUILDING UP A SHELL TIGHTLY ADHERENT TO AND EASIALY REMOVED FROM THE PATTERN CONSISTING ESSENTIAALLY OF A MIXTURE OF ABOUT 18 TO 55% POLYVINYL ALCOHOL, ABOUT 20 TO 60% SILICA FLOUR AND ABOUT 15-30% THINNER, SAID SILICA FLOUR HAVING A MAXIMUM COARSENESS OF ABOUT 200 MESH SISH SIZE.
Claim 2
Dependent Claim
63 words
A PARTING COMPOSTION FOR COATING THE SURFACE OF A PATTERN TO BE METAL SPRAYED FOR BUILDING UP A SHELL TIGHTLY ADHERENT TO AND EASIALY REMOVED FROM THE PATTERN CONSISTING ESSENTIAALLY OF A MIXTURE OF ABOUT 18 TO 55% POLYVINYL ALCOHOL, ABOUT 20 TO 60% SILICA FLOUR AND ABOUT 15-30% THINNER, SAID SILICA FLOUR HAVING A MAXIMUM COARSENESS OF ABOUT 200 MESH SISH SIZE.
References Cited (Backward Citations)
US2421373A
Cited
US2629907A
Cited
US2639213A
Cited
US2744011A
Cited
US2892227A
Cited
US2878539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |