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Patent US2494403A successfully refreshed from Google Patents.
US2494403A
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Mold composition
Assignee: United States Gypsum Co
•
Filing: 1945-09-19
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Granted: 1950-01-10
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Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 Brainard W Nies
- 👤 Edward W Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:28
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B28/145; C04B28/146; C04B2103/00; C04B2103/10; C04B2103/12; C04B2111/00; C04B2111/00474; C04B2111/00939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PLASTER COMPOSITION CHARACTERIZED BY HIGH AND CONTROLLABLE EXPANSION DUE TO SETTING AND HYDRATION WITH WATER BEYOND THE NORMAL EXPANSION FOR SAID PLASTER OF NOT OVER SUBSTANTIALLY
Claim 2
Dependent Claim
27 words
A PLASTER COMPOSITION CHARACTERIZED BY HIGH AND CONTROLLABLE EXPANSION DUE TO SETTING AND HYDRATION WITH WATER BEYOND THE NORMAL EXPANSION FOR SAID PLASTER OF NOT OVER SUBSTANTIALLY
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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) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |